tides | University of Hawaiʻi System News /news News from the University of Hawaii Fri, 08 May 2020 22:26:32 +0000 en-US hourly 1 /news/wp-content/uploads/2019/04/cropped-UHNews512-1-32x32.jpg tides | University of Hawaiʻi System News /news 32 32 28449828 Plan for disruptive high-tide flooding by mid-century /news/2018/10/15/coffman-fletcher-high-tide-column/ Mon, 15 Oct 2018 21:48:58 +0000 /news/?p=86020 This column on the rising sea level change in 鶹ý by Makena Coffman and Chip Fletcher ran in the Honolulu Star-Advertiser on October 14, 2018.

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This column written by University of 鶹ý at ԴDz’s , an urban and regional planning professor and chair of the Honolulu Climate Change Commission, and , associate dean of the School of Ocean and Earth Science and Technology and vice chair of the commission, ran in the . The commission gathers the latest science and information on climate change impacts to 鶹ý to provide policy recommendations to the mayor, City Council and city departments.

High sea level in Waikīkī. Credit: 鶹ý Sea Grant King Tides Project.
Makena Coffman
Chip Fletcher

Prior to Hurricane Lane making a run at our island, the city’s Honolulu Climate Change Commission officially released two documents describing the impact of a warmer world.

The first, Climate Change Brief, lays out the trajectory of the climate threat, and the risks to Oʻahu. The second, Sea Level Rise Guidance, explains the projected impact and timeline of rising seas around Oʻahu, and makes recommendations for action:

  • Plan for 3.2 feet (1 meter) of sea level rise by the end of the century, with the potential for 6 feet (1.8 meter) of rise if we don’t radically reduce global carbon emissions now.
  • Plan for disruptive high tide flooding by mid-century.

High-tide flooding causes storm drains to back-flow onto roads, the water table to rise through the ground, and rain to pond and flood. Beaches erode, waves reach into homes, and coastal roads are overwashed and undermined. We began to see such effects during the summer 2017 “king tides.”

The commission recommends taking key actions now to be as prepared as possible when large impacts arrive. We appreciate the quick action by Mayor Kirk Caldwell, who issued a formal directive in July to all city departments and agencies in direct response to our recommendations.

We also appreciate the many city departments that came to testify in front of our commission with their plans and actions. Among them: the Honolulu Board of Water Supply, which has initiated a climate adaptation plan; the Department of Facility Maintenance, which is evaluating storm water solutions; the Department of Environmental Services with concerns about wastewater treatment; the Department of Planning and Permitting with worries about coastal erosion and adapting for sea level rise; and, HART, which has pro-actively studied sea level rise and made recommendations about raising station areas and critical infrastructure to avoid future flood levels.

While our kuleana is to inform the city, the reality is that climate change threatens all of 鶹ý’s beaches, coastal communities and shoreline infrastructure, including airports, harbors and roads.

With rising seas, beaches will migrate landward. If this migration is not allowed, beaches will disappear. Infrastructure will be flooded, stressing their engineered capacity, and we must make tough decisions as a community to determine what investments can and should be made, and where.

What is already clear: sea level rise has made many of our current policies and assumptions around shoreline development out of date. Our coastal communities were and continue to be designed and built for a climate and ocean level that no longer exists. For the health and survival of our natural resources, including beaches, and the safety of people and structures, this must change.

The negative impacts of climate change poised to hit Oʻahu — drought, flooding, sea level rise, heat stress, disease, and yes, larger and more powerful hurricanes approaching along new pathways — can be reduced. The faster we and the globe eliminate fossil fuels from the economy, the less adaptation we and our children will endure over coming decades.

Ask yourself, “What can I do to increase sustainability and resiliency in 鶹ý?” Some suggestions:

  • Reduce your consumption and waste.
  • Decarbonize your travel: drive and fly less, choose mass transit or take up biking.
  • Decarbonize your diet with more locally grown vegetables.
  • Serve the community: Help plant trees and remove invasive species, adopt a beach or park, join a community service organization.
  • Use your vote to position legislation and policies to make Oʻahu a climate-ready community.
  • Communicate concern about climate change with others.

We are fortunate to live in a state where the science of climate change is accepted and generally understood. Let’s take advantage of this awareness, and our collaborative spirit, to catch-up on climate change.

We need to eliminate dangerous fossil fuels, plan for more frequent and intense weather hazards, and adapt to sea level rise. Now is the time for new policies and behaviors to protect our most treasured places.

Related UH News stories:

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Hawaiʻi land impacted by sea level rise may be double previous estimates /news/2018/09/28/sea-level-rise-double-estimated-impact/ Fri, 28 Sep 2018 19:32:27 +0000 /news/?p=85303 UH researchers Tiffany Anderson and Chip Fletcher say including the effects of waves and erosion expands vulnerable areas.

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Damaged homes on the shoreline
Extensive shoreline erosion near homes at Ѵǰܱŧʻ on Oʻahu’s north shore. Credit: Brad Romine.

By including models of dynamical physical processes such as erosion and wave run-up, a team of researchers from the and the state determined that 鶹ý land areas vulnerable to future sea-level rise may be double what was previously estimated.

The .

“It’s important that we identify land areas vulnerable to sea level-related hazards because, if left unmanaged, flooding, wave inundation and erosion will continue to encroach upon coastal lands that are typically heavily developed,” said , study co-author and associate dean and earth sciences professor at the UH ԴDz (SOEST). “Preparing for these effects will be very costly and take a long time to implement. With these results, stakeholders of all types are now able to establish empirically based adaptation policies.”

Previously, a widely used approach for assessing impacts of sea level rise was the “bathtub” model, in which a static sea-level surface is projected onto a terrain model.

“The bathtub method provides a good first look at low-lying flood-prone areas, but underestimates the full extent of potential damage due to sea level rise, particularly on 鶹ý‘s high-energy coasts,” said lead researcher , a faculty member in the at SOEST.

As sea level rises, several processes are at work. Coastal erosion results in permanent land loss, but is also essential for preserving beaches; annual wave flooding rapidly escalates past a critical point; and groundwater inundation and storm-drain backflow create new wetlands and cause urban flooding. These render coastal protection insufficient as an adaptation strategy.

Developing a more realistic prediction

Beach with tarps
Shoreline erosion near homes. Credit: Sam Lemmo.

“Our more comprehensive assessment reveals important realities that can be overlooked with other methods,” said Fletcher. “Critically, the ‘bathtub’ approach alone ignores 35–54 percent of the total land area exposed to one or more of these hazards, depending on location and sea level rise scenario.”

The team also found that typical elevations of 鶹ý‘s low-lying coastal plains create thresholds of flood levels, above which rapid increases in flooding occur. As sea level rises, coastal lands are exposed to higher flood depths and water velocities.

The prevalence of low-lying coastal plains leads to a rapid increase in land exposure to hazards when sea level exceeds a critical elevation of about 1 to 2 feet, depending on location.

The team had identified this phenomenon in previous research and named it a “critical point.”

“Additionally, a large portion of lands at risk of flooding is not in direct proximity to the shoreline,” said Anderson. “Instead, they are low-lying areas where sea-level rise causes the groundwater table to rise up to the surface. These areas can be located one to two miles inland from the coastline.”

Preparing for the future

The modeling presented in this study was conducted to support the creation of the 鶹ý Sea Level Rise Vulnerability and Adaptation Report, which is the basis for further government planning initiatives.

Anderson and team are currently incorporating rainfall into the computer model to determine how sea level-related flooding might be exacerbated during rainfall events that occur during high tides. , also located within SOEST, and Tetra Tech Inc. are helping to guide state and county agencies in considering this new data in future planning.

—By Marcie Grabowski

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鶹ýHilo students’ climate change short stories published /news/2018/09/17/climate-change-anthology/ Mon, 17 Sep 2018 23:50:11 +0000 /news/?p=84663 A UH Hilo student has published an anthology of climate-themed stories written by fellow classmates that is currently available on Amazon.

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Kai Gaitley
Kai Gaitley.
book cover
The book’s cover art is by UH Hilo student Zoe Whitney.

A student has published an anthology of climate-themed stories written by fellow classmates. The e-book, , edited by Kai Gaitley, is currently available on Amazon.

Gaitley took a literature and the environment geography class taught by Kathryn Besio. For the final exam, the students in the class were asked to write a climate-themed short story.

Gaitley says for many of the students, learning about the realities of climate change was a shock, having been fed a lifetime of disinformation. He says the fear and anger that sometimes bubbles up in the stories is a reflection of their feelings. “Many of the stories focus on family and home, showing who the authors were scared and angry for.”

“I suggested to Professor Besio that it would be nice to make these available as a collection, because as a whole, the message they conveyed was emblematic of the mindset of the group,” said Gaitley. “Professor Besio then suggested that for the next semester I should take on the project as directed studies. So in spring this year, I set about editing 13 short stories and learning the process of e-publishing.”

The student authors:

  • “The Rising” by Kimiko Taguchi
  • “Our Excuse” by Tessa Henderson
  • “Plus-One: Fireball” by Tynsl Kailimai
  • “Home Cooking” by Jack Stonehouse
  • “Surviving the Heat” by Jess Bee
  • “Little Soldiers” by Jadessa
  • “The Last Directorate” by Uilani Lesli
  • “The Journal of Emalia Lononui” by Kim Leolani Kalama
  • “A Native’s Journey” by Paele Kiakona
  • “The Koʻa Chronicle” by Jowell Kaimana Guerreiro
  • “Naitram Saviors” by Heidi Featherstone
  • “The Flora Design” by Traven Apiki
  • “Ghosts of The Delta” by Kai A. Gaitley

The book’s cover art is by UH Hilo student Zoe Whitney.

When Gaitley decided to look for someone well known to do the introduction, he found Lynne Cherry, an internationally known environmentalist, author, illustrator and filmmaker dedicated to communicating with children. Cherry founded the educational organization , a film series dedicated to educating and empowering children and youth about addressing climate change. All proceeds from the anthology will go to the Young Voices for the Planet project.

“It was the greatest accident we could have imagined, as Lynne created the Young Voices for the Planet project, which makes films about young people doing incredible things to combat climate change,” Gaitley explains. “She readily agreed to help us and write an introduction [and then] promote it to her fans on our behalf.”

.

—By Susan Enright

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Sea Grant TV series wins awards for coverage of sea-level rise and coastal erosion /news/2018/07/30/sea-grant-tv-series-wins-awards/ Mon, 30 Jul 2018 17:43:44 +0000 /news/?p=82531 The Voice of the Sea, now in its fifth season, promotes ongoing scientific and cultural work in the Pacific.

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Waikiki Beach
Voice of the Sea won a silver Telly for “Sea Level Rise and the Ala Wai Canal”
Title tv screen with "Voice of the Sea"
Beach in Kihei
Voice of the Sea captured a bronze Telly for “Coastal Erosion on Maui”

The television series, produced by the University of 鶹ý , won two 2018 Telly Awards for educational episodes focused on sea-level rise and coastal erosion in 鶹ý.

The Telly Awards honor excellence in local, regional and cable TV programming. Voice of the Sea was selected for awards out of a highly competitive field of more than 12,000 entries from all 50 states and 5 continents.

Voice of the Sea won a silver Telly for the episode which highlights how rising sea levels in Waikīkī will impact the state’s critical infrastructure and fresh water supplies. The episode also showcases Sea Grant’s popular citizen science program: the .

The program was awarded a bronze Telly for the episode “.” It examines West Maui’s eroding beaches—where large condominiums are being threatened by loss of sand and severe erosion—and interviews Sea Grant faculty who are partnering with the community to develop viable solutions.

Voice of the Sea has won 16 Telly Awards since 2014.

“This award-winning television show, now in its fifth season, has been engaging and inspiring viewers of all ages throughout the Pacific since it began,” said Sea Grant Director . “I am so proud of all of the recognition the show is receiving and, as importantly, am thrilled that it is such an effective way for many organizations to share with the community the fascinating work that is occurring each and every day.”

More on Voice of the Sea

Voice of the Sea promotes ongoing scientific and cultural work in the Pacific from recognized experts and helps increase awareness, interest and knowledge of marine science. The half-hour television series airs on Saturdays at 4 p.m. and Sundays at 5:30 p.m. on K5 The Home Team.

The Voice of the Sea television series is a signature project of the UH Sea Grant , produced in collaboration with the UH ԴDz ‘s and the National Oceanic and Atmospheric Administration.

Watch .

—By Cindy Knapman

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UH-led Honolulu commission issues sea-level and climate-change guidance /news/2018/07/16/climate-change-guidance/ Tue, 17 Jul 2018 03:01:45 +0000 /news/?p=82120 In response, Mayor Caldwell issued a formal directive to all city departments and agencies to take action in order to address, minimize the risks from and adapt to the impacts of climate change and sea level rise.

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From left, Makena Coffman, Mayor Kirk Caldwell and Charles Fletcher

The Honolulu Climate Change Commission, chaired by Professor , has presented its recommendations on sea level rise guidance and climate change to Mayor Kirk Caldwell and members of the Honolulu City Council. In response, Caldwell issued a formal directive to all city departments and agencies to take action in order to address, minimize the risks from and adapt to the impacts of climate change and sea level rise.

High sea level in Waikīkī. Credit: 鶹ý Sea Grant King Tides Project.

In its sea-level rise guidance, the commission emphasized that the city should be planning for high tide flooding to become a problem by mid-century. This will be associated with global mean sea level rise of 3.2 feet by the end of the century. Also, because of continued high global carbon emissions, the commission recommended taking into consideration 6 feet of sea-level rise in later decades of the century, especially for critical infrastructure with long expected lifespans and low-risk tolerance. The sea-level rise guidelines recommended by the commission are consistent with findings by the Intergovernmental Panel on Climate Change and the National Oceanic and Atmospheric Administration (NOAA).

“Coastal communities across the world are grappling with how to address rapid sea level rise due to climate change,” said Coffman. “The commissioners and I appreciate that our community has established a process by which science can directly inform decision-making. The city’s leadership has been proactive in understanding the scope of the problems that climate change will create for 鶹ý and changing policies to make us more resilient. Embracing the commission’s sea level rise guidance is another step in this direction.”

In an accompanying climate-change brief, an independent report that lays the foundation for the sea-level rise guidance, the Climate Change Commission agreed with the overwhelming majority of international scientists that the world is currently on a pathway of warming more than 5.4 degree F above pre-industrial levels.

Specific to the City and County of Honolulu, the commission included in its detailed sea-level rise guidance that rising seas will threaten Oʻahu communities and natural ecosystems in multiple ways, including increased vulnerability to flooding; land loss and coastal erosion; saltwater intrusion into streams and coastal wetlands; and increased damage when hurricanes, tsunamis and seasonal high waves strike. The commission further concluded that rising seas will negatively impact local communities, habitats, property, infrastructure, economies and industry.

“As a scientist, father and grandfather, I am grateful that Mayor Caldwell is acting with courage and speed on the commission’s recommendations,” said Commision Vice Chair , associate dean of UH ԴDz’s . “I am extremely proud that in the City and County of Honolulu, and throughout the state of 鶹ý, our leadership recognizes that every community must act immediately to reduce global carbon emissions and adapt to the climate change risks that are now inevitable. Unless the world joins us, we will all be facing severe and dire consequences.”

Car driving through flooded street
High king tide in Māpunapuna

The commission, which carefully tracks a combination of international research and local modeling to underpin its decisions, also stressed that impacts from high tide flooding will arrive decades ahead of permanent inundation. Tidal flooding is projected to become more frequent and erode beaches, flood roads and, in times of rainfall, bring local transportation to a standstill. According to modeling by NOAA, under its “Intermediate scenario,” flooding exceeding last year’s “king tide” level could be present an average of twice per month in Honolulu before mid-century.

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Research reveals how climate change may affect Hawaiian fishpond aquaculture /news/2017/12/21/climate-change-may-affect-hawaiian-fishpond/ Fri, 22 Dec 2017 00:29:53 +0000 http://www.hawaii.edu/news/?p=72653 Results published recently in PlosONE indicate that there is a relationship between two periods of high fish mortality at Heʻeia Fishpond and changes in the climate.

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Hiʻilei Kawelo and UH ԴDz Professor Margaret McManus at Heʻeia Fishpond. Credit: R Alegado.

For centuries, indigenous peoples of the Hawaiian Islands practiced sustainable aquaculture by building walled fishponds in coastal estuaries. Historical records estimate that, in the early 1900s, an extensive network of more than 450 fishponds across the Hawaiian Islands produced upward of 2 million pounds of fish annually and supported large thriving communities. Currently, worldwide aquaculture accounts for almost one-half of fish consumption.

Researchers with the University of 鶹ý at ԴDz’s  (SOEST) and Native Hawaiian fishpond stewards formed a collaborative partnership to understand the role of climate change in subtropical coastal estuarine environments within the context of aquaculture practices in Heʻeia Fishpond on Oʻahu. indicate that there is a relationship between two periods of high fish mortality at Heʻeia Fishpond and changes in the climate.

“Today, a majority of Hawaiian fishponds have been lost to coastal development and urbanization, but a growing community-based movement is working to restore and revitalize Hawaiian fishponds as a cornerstone to sustainable food fish production and resilient communities in an era of declining reef fish stocks,” said Hiʻilei Kawelo, Paepae o Heʻeia executive director.

However, these efforts are threatened by uncertainty over the effects of short- and long-term environmental changes, specifically storms and fluctuations in extreme seawater temperature that bring new stressors and exacerbate existing management challenges.

New understanding informs resource management

Awa from Heʻeia Fishpond. Credit: Paepae o Heʻeia.

Throughout the 12-year study from 2004 to 2016, the partners measured winds, tides, temperature, water height, water movement and suspended material and phytoplankton in the water; and fish number, density and length. During this time, 鶹ý experienced periodic effects of El Niño such as slackening trade winds and warmer surface waters.

The partners correlated two periods of extremely high fish mortality at Heʻeia Fishpond with weakened trade winds in the week preceding each mortality event, as well as surface water temperatures 2 to 3 degrees Celsius warmer than normal. They posit that the lack of trade wind-driven surface water mixing enhanced surface heating of the fishpond, leading to stagnant conditions and stress on fish populations.

“Our results provide empirical evidence regarding El Niño effects on the coastal ocean, which can inform resource management efforts about the potential impact of climate variation on aquaculture production,” said , corresponding author of the study and assistant professor in the SOEST and University of 鶹ý (鶹ý Sea Grant).

As climate change is predicted to alter the intensity, frequency and geographic patterns of El Niño events, the partners developed three recommendations to reduce the impact of warming events on fishponds and limit the mortality of moi. They recommended moving net pens closer to the mākāhā (sluice gates) with the highest flow rates of ocean water entering the fishpond which will decrease water temperatures and increase aeration in the pens. Additional steps include installing artificial aeration systems in the pens to limit stagnation and low oxygen, and implementing flexible harvest strategies at the onset of a warming event.

Hiilei Kawelo tending to moi at Heʻeia Fishpond. Credit: Paepae o Heʻeia.

Using Hawaiian language newspapers to examine the past

To broaden understanding of Heʻeia Fishpond, the partners will next examine the impact of restoration on water chemistry in the fishpond over the past 10 years using a longtime series of data funded by 鶹ý Sea Grant. Additionally, they are trying to determine how Native Hawaiians responded and adapted to these seasonal and episodic events. To do this, they have initiated investigation into the Hawaiian language newspapers to understand how these large scale climate patterns affected 鶹ý.

“Surprisingly, we have not seen evidence of historical fishkills, and we hypothesize that either fishponds were much less vulnerable to these events, or these events were much less severe, or that our kupuna (elder/ancestor) developed adaptive measures to combat these events,” said Alegado.

—By Marcie Grabowski

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鶹ýSea Level Center expands forecasts with new federal funding /news/2017/11/09/uh-sea-level-center-expands-forecasts/ Fri, 10 Nov 2017 00:27:36 +0000 http://www.hawaii.edu/news/?p=70701 $5 million from NOAA will fund research of vital topics such as sea level rise and coastal flooding.

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High sea level in Waikīkī. Credit: 鶹ý Sea Grant King Tides Project.

Over the next three years, the  in the at the and its partners will receive more than $5 million from the in the Oceanic and Atmospheric Research line for sea level rise research.

One aspect of the new funding supports Multi-Model Seasonal Sea Level Forecasts for the U.S. Coast. It will combine several different models to produce experimental regional sea level outlooks months in advance for Pacific Islands including 鶹ý, Puerto Rico and the entire continental U.S. Given that no seasonal prediction of coastal high water events currently exists on a national scale, this project will be invaluable to community members and community planners for long- and short-term decision-making. Ultimately, the research team will develop a web portal to provide the regional sea level outlooks to the public, including high-water alerts, which could be used for new or existing NOAA coastal flood products.

“The occurrence, duration and amplitude of coastal flooding events are increasing with rising sea levels,” said Mark Merrifield, lead investigator of the new seasonal sea level forecasts project and former director of the Sea Level Center. “The ability to assess when high regional sea levels are likely to occur will benefit managers and decision makers involved in coastal flooding mitigation.”

High water in Waikīkī. Credit: 鶹ý Sea Grant King Tides Project.

The other aspect of funding provides ongoing support for the Sea Level Center to collect and quality control tide gauge data from around the world through a cooperative agreement between NOAA and the . The Sea Level Center is the only group in the world that provides the public with up-to-date hourly sea level data from a global tide gauge network. These data are essential for studying sea level extremes and monitoring long-term global sea level rise.

“Support from NOAA enables the Sea Level Center to serve as a data center for sea level observations and maintain tide gauges in the Global Sea Level Observing System,” said Acting Director Philip Thompson. “With this substantial investment in sea level research and observations via the Sea Level Center, and with sea level rise being a big issue for the state, we are proud to be taking the lead on these new and continued efforts.”

—By Marcie Grabowski

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鶹ýHilo student’s performance art addresses rising sea levels in his homeland /news/2017/09/20/performance-art-addresses-rising-sea-levels/ Wed, 20 Sep 2017 19:29:16 +0000 http://www.hawaii.edu/news/?p=65711 For his final exam in an introductory theatre course, Randon Jack did a performance piece about the threat of rising sea levels on his homeland atoll of Majuro.

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Marshall Islands, Micronesia: aerial view of Majuro Atoll and Lagoon; Delap, Uliga and Darrit areas
Randon Jack

In Professor theatre class last spring, she shared with her students a performance piece called Undesirable Elements by Ping Chong and Company. Student Randon Jack was moved by the performance and felt inspired to create a work in the spirit of Ping Chong’s work when he prepared for the course’s final exam. Jack, who was born and raised in Majuro, Marshall Islands, created a work is called Ta in “Marshall Islands?”

“Randon used the style and spirit of that (Ping Chong) effort to create his own version, reflecting on life in his atoll,” explains Johnson. “While very serious in nature, it begins with a true look at life on Randon’s atoll, sketches the lifestyle and traditions he holds dear, then reflects on the fragility of it all if/when sea level rise destroys his land.”

Johnson says the powerful final performance was the highlight of the semester.

“I believe that Ta encapsulates the range of pride and concern Randon feels about his home,” says Johnson. “Within the piece, he crafted images that led us through daily life, then shifted our attention to what would be lost because of the rising sea dilemma. Full of poignancy, Randon delivered the work with sensitivity, smiling at the memories and allowing the weight of the inevitable to wash over us at the end of the performance. There were gasps among his classmates and I was moved to tears.”

An excerpt from Jack’s work regarding sea level rise and the impact on his home.

What do I think of,
When I hear the words,
Sea level rise?
King tides
Becoming bigger and more frequent
Nothing our parents or grandparents
Have seen before
Waves crashing along the coasts
Where the graves face the sea
These tombs broken
Exposing coffins
Decomposed bodies
Are the deceased at peace now?
Homes broken down by the waves
Forcing families to move
But where else can they go?
Where else can we go?
We’ve no mountains to move to
We fight
Protest
Plead
For bigger nations to help us
Prevent sea level rise
Stop burning fossil fuels
But no one listens
They don’t care
As they did not care for us
When they first “discovered” us

(For Jack’s full piece, Ta in “Marshall Islands?”, go to .)

“He took an issue that affects him personally and used the performance medium to bring it to a new level of understanding,” says Johnson. “The more people who hear this message, the better.”

For the full story, go the .

—From UH Hilo Stories

This article is part of a series on curriculum and projects at UH Hilo focusing on sustainability. Read the previous stories:

  • , September 11, 2017
  • , September 18, 2017

—By Susan Enright

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Blending culture and technology to restore Hawaiian fishponds /news/2017/08/15/hawaiian-fishponds-workshop/ Tue, 15 Aug 2017 23:28:53 +0000 http://www.hawaii.edu/news/?p=63800 With the goal of preserving Hawaiian fishponds, UH ԴDz faculty and students and representatives from 18 traditional fishponds across 鶹ý gathered to share resources.

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two people looking at bleached coral
Breakout sessions furthered discussions including coral bleaching dynamics. Credit: KUA

With the goal of preserving loko iʻa or Hawaiian fishponds, 15 faculty and students and more than 30 representatives from 18 traditional Hawaiian fishponds across four Hawaiian islands gathered together to share resources. The three-day workshop blended cultural and environmental resilience with contemporary technology.

Loko iʻa or Hawaiian fishponds, are unique aquaculture systems that exist throughout 鶹ý, and continue to feed and connect communities around the islands. Among the 488 loko iʻa identified in a statewide survey, many are in degraded condition, sometimes completely beyond repair or unrecognizable as fishponds.

For the sites that are partially intact, communities and stewardship groups are actively restoring or have expressed interest in reviving the integrity and productivity of these places. Since 2004, kiaʻi loko, fishpond guardians and caretakers, have met as a statewide network known as Hui Mālama Loko iʻa with a purpose of sharing expertise and resources to amplify their collective work in reactivating loko iʻa throughout 鶹ý. The network is currently facilitated by local non-profit (KUA).

Developing low-cost monitoring approaches

Technological advancements have exploded in the past five years, and the costs of emerging sensors and instruments have drastically decreased. Most of these advancements have not yet been applied to environmental sciences or oceanography. , associate professor of at the UH ԴDz (SOEST), and his lab group and collaborators are developing new technologies and methods at the confluence of a growing interest in low-cost do-it-yourself electronics and the widespread acknowledgement that aquatic systems are woefully undersampled.

Over the past several years, and with funding from various sources, Glazer and team have developed low-cost wireless sensor packages that measure meteorological data, tides, water temperature, light, salinity, dissolved oxygen, pH, chlorophyll and turbidity—several parameters of interest that can inform the restoration and maintenance of fishponds across the state. Glazer sees this effort as a step in democratizing access to oceanographic sensor technology.

In addition to building their own tide gauges, participants visited Heʻeia Fishpond to talk with local kiaʻi loko about traditional measures of fishpond health and to see the new technology in action. The goals of the workshop, organized by Glazer and Loko Iʻa Coordinator at KUA Brenda Asuncion, included: information exchange to blend local and traditional coastal knowledge about loko iʻa with contemporary sensor technologies and oceanographic research; review lessons learned, understand fishpond restoration challenges, explore environmental sensor needs and knowledge gaps; and chart a course for developing future collaborations and success stories.

“This workshop is one important milestone in a very promising timeline of partnership between UH oceanography and local coastal communities,” said Glazer.

People assembling tide gauges
Participants assembled custom low-cost tide gauges to take home to loko iʻa. Credit: KUA

Funding for workshop and sensors

In addition to funding basic research, the National Science Foundation (NSF) supports capacity-building, community-building and direction-setting for Public Participation in Science Technology Engineering and Math Research (PPSR). In PPSR, members of the public partner with scientists and engineers to solve complex problems through participating in the formulation of questions and experiments; collection and analysis of data; and interpretation, use and publication of results.

A $300,000 award from NSF Ocean Sciences pioneered much of the lower-cost sensor network technology deployed at Heʻeia Fishpond between 2015 and 2017. A $50,000 award from the NSF Geoscience Directorate funded this workshop, and a new $670,000 award from NSF Ocean Sciences will fund continued sensor development in coastal 鶹ý for 2017–2020. The Schmidt Family Foundation has funded an additional $150,000 for related nearshore oceanographic sensor work in 2017–2018. Independently, NOAA has designated the 1,385-acre Heʻeia National Estuarine Research Reserve, and the Pacific Islands Ocean Observing System is developing new wave runup forecast tools for West Maui among other monitoring programs.

Additional partnership

A partnership between the following groups helped facilitate this workshop: National Science Foundation, KUA, Kamehameha Schools, Paepae o Heʻeia, Schmidt Marine Technology Partners and University of 鶹ý STEM Pre-Academy.

—By Marcie Grabowski

Participants from UH ԴDz and fishpond restoration groups gathered for the workshop. Credit: KUA
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Senator Brian Schatz discusses king tides in Voice of the Sea /news/2017/07/25/schatz-king-tides-voice-of-the-sea/ Tue, 25 Jul 2017 19:50:27 +0000 http://www.hawaii.edu/news/?p=62717 Researchers and specialists explored the effects of sea level rise in places like Waikīkī.

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King tides in Mapunapuna, Oahu. Credit: 鶹ý Sea Grant King Tides Project

In a special episode of which aired on July 23, researchers from the outreach specialists from the , and U.S. Senator Brian Schatz examined king tides and the effects of sea-level rise in Waikīkī.

鶹ý was once again impacted by king tides, the highest predicted tides of the year, on July 21–22. The last king tides event on June 24 resulted in the highest water level ever recorded on the Honolulu tide gauge in 112 years of recordkeeping (apart from Hurricane Iniki in 1992).

Voice of the Sea is a half-hour television show that profiles ocean and coastal scientists and cultural experts from 鶹ý and the Pacific, and airs on Sundays at 6 p.m. on (Channel 5 and 1005).

Mark Merrifield from UH ԴDz explains how climate change and sea-level rise could cause these high-water level events and flooding to eventually become commonplace. Matthew Gonser and Maya Walton from the UH Sea Grant College Program highlight the and how citizen scientists can get involved.

The episode premiered on July 23, 2017, and a second related episode featuring more information about sea-level rise and inundation will air on Sunday, July 30.

As a signature project of the UH Sea Grant College Program’s , Voice of the Sea aims to inspire an interest in ocean science, and teach concepts that apply to viewers' own lives and their relationship with the ocean and planet. It presents thought-provoking information in an exciting, original way. 

For more information and to view past episodes, visit .

—By Cindy Knapman

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