Folders: ROOT > ScienceBase Catalog > National and Regional Climate Adaptation Science Centers > Pacific Islands CASC > FY 2018 Projects > Supporting Sea-Level Rise Preparedness in Hawaiian National Parks ( Show direct descendants )
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ROOT _ScienceBase Catalog __National and Regional Climate Adaptation Science Centers ___Pacific Islands CASC ____FY 2018 Projects _____Supporting Sea-Level Rise Preparedness in Hawaiian National Parks Filters
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In recent years, rising sea levels have threatened critical infrastructure and cultural assets at Puʻuhonua o Hōnaunau National Historical Park thus motivating the park to make adaptive decisions in managing these key resources. To support the development of decision support tools for sea level rise preparedness, the U.S. Geological Survey (USGS) Coastal National Elevation Database (CoNED) Applications Project has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for Puʻuhonua o Hōnaunau National Historical Park. This dataset was developed in collaboration with the University of Hawaii- Mānoa Sea Level Center, Department of Interior Pacific Island Climate Adaptation Science Center, and...
Abstract (from AGU100): The state of Hawaiʻi and city of Honolulu experienced an unprecedented number of minor flooding episodes during 2017 due to the combination of seasonal high tides and record‐high mean sea levels. To quantify the impact of sea level rise on the tendency for flooding events to cluster in future years, we developed a hierarchical statistical model describing the number of days per year for which sea level exceeds a prescribed threshold in Honolulu as a function of annual mean sea level and the amplitude of the highest tides. Based on this model, we generate probabilistic projections of exceedance days per year for the 21st century, which show pronounced inflections in the frequency of exceedance...
Categories: Publication;
Types: Citation;
Tags: Pacific Islands CASC,
Sea-Level Rise and Coasts,
Water, Coasts and Ice
This tool provides projections and analysis of high-tide flooding days at the locations of tide gauges. If a tide gauge does not exist at the desired location, analysis from the closest tide gauge can provide useful information. However, it is important to consider the potential impact of local factors that can differ even over short distances such as land subsidence. You can select a location in two ways: Select a location from from the dropdown menu displaying the current location name. The locations can be searched by typing in this field. Select a location by clicking on the map. Note that the map can be hidden once the desired location is chosen using the switch beneath the location name. The methodology...
American Samoa is experiencing rapid relative sea level rise due to increases in global sea level and significant post-2009 earthquake land subsidence, endangering homes and critical infrastructure. Wave and water-level observations collected over a fringing reef at Faga‘itua Bay, American Samoa, in 2017 reveal depth-limited shoreline sea-swell wave heights over the range of conditions sampled. Using field data to calibrate a one-dimensional, phase-resolving nonhydrostatic wave model (SWASH), we examine the influence of water level on wave heights over the reef for a range of current and future sea levels. Assuming a fixed reef bathymetry, model results predict rising sea levels will escalate nearshore extreme water...
Categories: Publication;
Types: Citation
Increased coastal flooding due to sea-level rise (SLR) threatens the culture, habitat, and essential infrastructure of the Hawaiian and U.S. Affiliated Pacific Islands. The purpose of this project was to respond to the needs of Pacific Island communities for improved information about the frequency of coastal flooding—both in the near term and throughout the 21st century. Seasonal sea-level and flooding forecasts were produced by combining multiple types of information into a single forecast that performs better out to six months than any individual forecast. The forecasts are provided on a website created for this project. Projections of tidal flooding for the 21st century were produced for 35 island locations...
U.S. Geological Survey (USGS) and University of Hawaii - Mānoa (UH) scientists conducted field data collection efforts from August 19th - 27th, 2019 at Pu‘uhonua O Hōnaunau National Historical Park on the Big Island of Hawaii. The data collection efforts utilized a combination of remote sensing technologies to map the topography, critical infrastructure, and most importantly, the cultural assets of Pu‘uhonua O Hōnaunau National Historical Park. The USGS and UH team collected Global Navigation Satellite System (GNSS), total station, and ground based lidar (GBL) data, along with utilizing Uncrewed Aerial Systems (UAS) to collect imagery and UAS lidar to map these features. This data release contains shapefiles of...
Sea level anomaly extremes impact tropical Pacific islands, often with too little warning to mitigate risks. By compiling monthly sea level anomaly predictions from multiple statistical and dynamical (coupled ocean-atmosphere) models, which are typically skillful out to at least 6 months in the tropical Pacific, improved future outlooks are achieved. We deliver an experimental real-time forecast of monthly mean sea level anomalies and information that can be used to reduce impacts associated with sea level extremes. This product provides an outlook of monthly sea level anomalies for the next one to two seasons. We combine sea level forecasts with astronomical tide predictions to provide more accurate predictions...
This document contains planning materials for Pu‘uhonua O Hōnaunau National Historical Park (PUHO; an important Hawaiian cultural site) to address information gaps in sea level rise planning materials. This report focuses on planning horizons of 10-30 years and also provides information about the entire 21st century. Specific assets in the park are addressed and local/park knowledge was used to assess the level and frequency at which the any given structure can be inundated and still maintain its integrity.
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