Estimating Ground Elevation in Coastal Dunes from High-Resolution UAV-LIDAR Point Clouds and Photogrammetry

Pinton, Daniele; Canestrelli, Alberto; Moon, Robert J.; Wilkinson, Benjamin

doi:10.3390/rs15010226

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…UAV-SfM modeling methods can provide high-resolution DEMs, yet they are limited in capturing accurate ground elevation, particularly around densely vegetated areas and shorelines with high wave action [71]. LiDAR, on the other hand, may be better at penetrating these noisy areas [72]. Regardless, neither UAV-nor LiDAR-modeled flooding alone has the capability to capture the local hydrology movement, such as groundwater-inundated areas.…”

Section: Limitations and Ways To Improve The Use Of Uavs To Monitor C...mentioning

confidence: 99%

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Steward,

Ninomoto,

Kane

et al. 2024

Remote Sensing

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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.

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Section: Limitations and Ways To Improve The Use Of Uavs To Monitor C...mentioning

confidence: 99%

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Steward,

Ninomoto,

Kane

et al. 2024

Remote Sensing

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“…The advantages of UAV remote sensing technology for coastal mapping include automated surveys, high repeatability, minimal preparation, quick responses to extreme events, high measurement efficiency, and the generation of Digital Surface Models (DSMs) with high resolution and accuracy or point cloud by Structure for Motion (SfM) photogrammetry [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Quantifying Transgressive Coastal Changes Using UAVs: Dune Migration, Overwash Recovery, and Barrier Flooding Assessment and Interferences with Human and Natural Assets

Casagrande

Bezzi

Fracaros

et al. 2023

JMSE

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The advantages derived from the use of Uncrewed Aerial Vehicles (UAVs) are well-established: they are cost-effective and easy to use. There are numerous environmental applications, particularly when monitoring contexts characterized by rapid morphological changes and high rates of sediment transport, such as coastal areas. In this paper, three different case studies of survey and monitoring with high resolution and accuracy obtained through the use of UAVs are presented; these concern transgressive coastal sites. Results allow for the definition and quantification of coastal landforms and processes, including: (i) The anatomy of a parabolic dune and the rate of landward migration that could interfere with a tourist settlement; (ii) The mode and timing of morphological recovery and realignment of a barrier island overwashed by storm surge episodes; and (iii) The potential flood risk of a progradational spit that is a nesting site of a species of migratory breeding birds of conservation concern. The results demonstrate and confirm that, through a good coupling of drone-sensed quality data and accurate topographic control, quantitative estimates that are useful in assessing the impacts of natural processes involving both human and natural assets can be obtained.

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Monitoring mangrove-based blue carbon ecosystems using UAVs: a review

Abu Bakar,

Wan Mohd Jaafar,

Abdul Maulud

et al. 2024

Geocarto International

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Estimating Ground Elevation in Coastal Dunes from High-Resolution UAV-LIDAR Point Clouds and Photogrammetry

Cited by 5 publications

References 42 publications

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Highlighting the Use of UAV to Increase the Resilience of Native Hawaiian Coastal Cultural Heritage

Quantifying Transgressive Coastal Changes Using UAVs: Dune Migration, Overwash Recovery, and Barrier Flooding Assessment and Interferences with Human and Natural Assets

Monitoring mangrove-based blue carbon ecosystems using UAVs: a review

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