Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage
-
Published:2024-06-20
Issue:12
Volume:16
Page:2239
-
ISSN:2072-4292
-
Container-title:Remote Sensing
-
language:en
-
Short-container-title:Remote Sensing
Author:
Steward Kainalu K.12, Ninomoto Brianna K.13, Kane Haunani H.12ORCID, Burns John H. R.13ORCID, Mead Luke4, Anthony Kamala5, Mossman Luka6, Olayon Trisha4, Glendon-Baclig Cybil K.4, Kauahi Cherie12
Affiliation:
1. Multiscale Environmental Graphical Analysis (MEGA) Lab, Hilo, HI 96720, USA 2. Department of Earth Sciences, School of Ocean & Earth Science & Technology, University of Hawai′i at Mānoa, Honolulu, HI 96822, USA 3. Tropical Conservation Biology and Environmental Science, University of Hawai′i at Hilo, Hilo, HI 96720, USA 4. Kumuola Marine Science Education Center, Hilo, HI 96720, USA 5. Hui Ho′oleimaluō, Hilo, HI 96720, USA 6. Edith Kanaka′ole Foundation, Hilo, HI 96720, USA
Abstract
The use of Uncrewed Aerial Vehicles (UAVs) is becoming a preferred method for supporting integrated coastal zone management, including cultural heritage sites. Loko i′a, traditional Hawaiian fishponds located along the coastline, have historically provided sustainable seafood sources. These coastal cultural heritage sites are undergoing revitalization through community-driven restoration efforts. However, sea level rise (SLR) poses a significant climate-induced threat to coastal areas globally. Loko i′a managers seek adaptive strategies to address SLR impacts on flooding, water quality, and the viability of raising native fish species. This study utilizes extreme tidal events, known as King Tides, as a proxy to estimate future SLR scenarios and their impacts on loko i′a along the Keaukaha coastline in Hilo, Hawai′i. In situ water level sensors were deployed at each site to assess flooding by the loko i′a type and location. We also compare inundation modeled from UAV-Structure from Motion (SfM) Digital Elevation Models (DEM) to publicly available Light Detection and Ranging (LiDAR) DEMs, alongside observed flooding documented by UAV imagery in real time. The average water levels (0.64 m and 0.88 m) recorded in this study during the 2023 King Tides are expected to reflect the average sea levels projected for 2060–2080 in Hilo, Hawai′i. Our findings indicate that high-resolution UAV-derived DEMs accurately model observed flooding (with 89% or more agreement), whereas LiDAR-derived flood models significantly overestimate observed flooding (by 2–5 times), outlining a more conservative approach. To understand how UAV datasets can enhance the resilience of coastal cultural heritage sites, we looked into the cost, spatial resolution, accuracy, and time necessary for acquiring LiDAR- and UAV-derived datasets. This study ultimately demonstrates that UAVs are effective tools for monitoring and planning for the future impacts of SLR on coastal cultural heritage sites at a community level.
Funder
National Aeronautics and Space Administration Award
Reference74 articles.
1. Sweet, W.V., Hamlington, B.D., Kopp, R.E., Weaver, C.P., Barnard, P.L., Bekaert, D., Brooks, W., Craghan, M., Dusek, G., and Frederikse, T. (2022). Global and Regional Sea Level Rise Scenarios for the United States: Updated Mean Projections and Extreme Water Level Probabilities Along U.S. Coastlines, National Oceanic and Atmospheric Administration, National Ocean Service. Available online: https://aambpublicoceanservice.blob.core.windows.net/oceanserviceprod/hazards/sealevelrise/noaa-nos-techrpt01-global-regional-SLR-scenarios-US.pdf. 2. Hawai′i Climate Change Mitigation and Adaptation Commission (2023, December 28). Hawai′i Sea Level Rise Vulnerability and Adaptation Report, Available online: https://climateadaptation.hawaii.gov/wp-content/uploads/2017/12/SLR-Report_Dec2017.pdf. 3. Laramee, L., Romine, B., Wirts, A., Fletcher, C., Habel, S., Budge, J., Lee, C., and Ho, A. (2022). Hawai′i Sea Level Rise Vulnerability and Adaptation Report, Hawai′i State Climate Commission. 4. Managing for Diverse Coastal Uses and Values under Sea Level Rise: Perspectives from O′ahu, Hawai′i;Bremer;Ocean. Coast. Manag.,2022 5. Kali′uokapa′akai Collective (2021). The Kali′uokapa′akai Collective Report, Re-envisioning Wahi Kūpuna Stewardship in Hawai′i, Kali′uokapa′akai Collective.
|
|