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Nearshore Substrate Mapping Change Analysis using Multispectral Imagery, California South Coast MPA Baseline Study, 2011 to 2012

Published by California Ocean Protection Council | State of California | Metadata Last Checked: July 29, 2025 | Last Modified: 2018-05-15T18:22:45.472080
Three remote sensing datasets were utilized to create the final substrate map products: 1) 4-banded imagery collected in June, October and November of 2012 by Keystone Aerial Mapping with its Microsoft UltraCam-X (used for 2012 intertidal and kelp mapping); 2) 4-banded imagery collected in December of 2011 by Ocean Imaging using its DMSC MK II sensor (used for 2011 kelp mapping); 3) Light Detection and Ranging (LiDAR) topographic data collected by Fugro Earth Data in March, 2010. The LiDAR dataset (providing high resolution topographical data of the intertidal zone) proved to be less useful for intertidal zone delineation than for the North Central California Coast (NCC). This was due to data format issues and some obvious errors in the SCR dataset in the lower intertidal to subtidal zones. However, the LiDAR dataset was used whenever possible. Field data and photographs collected for this project between 2013-2014 were also utilized to divide the terrestrial, intertidal and subtidal areas into subzones helping to create subzone-specific training sets used in the supervised classification procedure. Each subzone classification was then manually edited in order to ensure the highest accuracy product possible, and then mosaicked together into subregions of the overall SCR. The habitat classes this process confidently identified and mapped using the multispectral imagery for the sub/intertidal zones were: 1 - Whitewash/Undefined 2 - Water 3 - Sandy Beach 4 - Mixed Red/Brown Algae 5 - Shadow 6 - Terrestrial Vegetation 7 - Unvegetated Rock 8 - Beach Wrack 9 - Kelp/Brown Algae 10 - Blue-Green Algae 11 - Mixed Rock/Mussels/Barnacles/Anemone 12 - Cobble 13 - Man-made/Artificial 14 - Driftwood 15 - Surf Grass 17 - Eel Grass 21 - Green Algae 22 - Submerged Sandy Bottom 23 - Submerged Rock/Reef 24 - Deep Water

Resources

30 resources available

  • SANDAG Habitat Mapping - Ocean Imaging Processing - Metadata

    PDF
  • Final Report Nearshore Substrate Mapping Change Analysis Using Historical and Contemporary Multispectral Aerial Imagery

    PDF
  • Intertidal Classification Summary by MPA

    PDF
  • Intertidal Classification Summary by Region

    PDF
  • Intertidal Coverage Area Change 2002 - 2012

    PDF
  • Yearly Kelp Coverage Area by MPA

    PDF
  • Yearly Kelp Coverage Area by Region

    PDF
  • Survey Sites

    XLSX
  • Microsoft Vexcel Ultra Cam X - Metadata

    PDF
  • Intertidal and Kelp Classification Geotiff 2012 - Anacapa

    GEOTIFF
  • Intertidal and Kelp Classification Map 2012 – San Miguel Island

    ZIP
  • Intertidal and Kelp Classification Map 2012 – La Jolla and Point Loma

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Dana Point

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Point Conception

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Cruz Island North East

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Catalina Island North

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Point Dume

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Imperial Beach

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Encinitas and La Jolla

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Rosa Island South

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Rosa Island North

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Barbara Island

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Point Vicente

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Cruz Island North

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Catalina Island West

    ZIP
  • Intertidal and Kelp Classification Map 2012 - Anacapa

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Santa Cruz Island South

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Catalina Island East

    ZIP
  • Intertidal and Kelp Classification Map 2012 – Coal Oil Point

    ZIP
  • Data package for Intertidal Change Detection analysis

    ZIP

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