Coastal Risk & Erosion$39
Coastal Erosion Monitoring
Research report in coastal risk & erosion focused on Coastal Erosion Monitoring.
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Coastal Infrastructure$39
Seawall Tetrapod Counting
Seawall Tetrapod Counting framed as a research-led coastal infrastructure study.
Category
Coastal Infrastructure
Format
PDF Report
Delivery
Digital download after purchase
Price
$39
Summary
This report presents a Sentinel-2 based framework for mapping armored coastal segments along Japan’s shoreline, including seawalls, revetments, and tetrapod-protected stretches. Rather than counting individual concrete units, the study identifies defended shoreline segments using spectral contrasts and a U-Net segmentation model trained across climatically and geomorphologically different coastal regions. Applied nationally, the workflow produces a spatially consistent inventory of coastal defense infrastructure and highlights stronger concentrations along parts of the Sea of Japan coast and typhoon-exposed Pacific prefectures. The output is positioned as a baseline for coastal vulnerability assessment, climate-adaptation planning, and longer-term monitoring of engineered shorelines.
What the report covers
- Maps armored coastal segments around Japan instead of attempting to count individual tetrapods.
- Covers shoreline infrastructure across the full Japanese archipelago and all prefectures.
- Uses Sentinel-2 spectral bands plus NDWI and NDBI within a U-Net segmentation workflow.
- Produces a national inventory of defended shoreline extent and segment-length patterns.
- Highlights where coastal defenses are most concentrated for risk, adaptation, and shoreline monitoring work.
Why it matters
Mapping coastal defense assets supports shoreline protection planning, infrastructure visibility, and maintenance prioritization.
Intended sectors and users
GovernmentCoastal engineeringResilience planningInfrastructure
Methodology framing
The report is framed around Sentinel-2, U-Net, using the methods described in the source abstract and paper title.
Applications and use cases
Coastal defense inventories
Shoreline infrastructure screening
Engineering support
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