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Nozik, Alexandra; Breckwoldt, Annette; Becker, Ronja; Fache, Elodie; Piovano, Susanna (2022): Typology approach from visual interpretation of satellite imagery for reef passages around 9 South Pacific islands. PANGAEA, https://doi.org/10.1594/PANGAEA.942568

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Abstract:
Data was collected as part of the SOCPacific project. Dealing with challenges of the pandemic and travel restrictions, project participants aimed to develop a typology of reef passages based on visual interpretation of freely available satellite imagery. Nine islands of different sizes and shapes surrounded by coral reef structures were selected based on previous field expertise. Reef passages were mapped in GoogleEarth and further processed in QGIS (version 3.16) and R (version 3.5.3). In addition, outlines for the selected islands were downloaded from the GADM database (gadm.org). Parameters distance to coast, minimal width of the passage and the assigned type were added to the dataset. Passages were assigned one of three types defined in Breckwoldt et al. (in review) - Coastal, Lagoon or Open Ocean - depending on the geomorphological appearance of the reef and distance to the coast.
Keyword(s):
coral reefs; reef passages; satellite image analysis; satellite remote sensing; South Pacific; typology; visual interpretation
Project(s):
Funding:
French National Research Agency (ANR), grant/award no. ANR-17-FRAL-0001-01: A Sea of Connections: Contextualizing Fisheries in the South Pacific Region – SOCPacific
German Science Foundation (DFG), grant/award no. 389654580: A Sea of Connections: Contextualizing Fisheries in the South Pacific Region
Coverage:
Median Latitude: -19.732848 * Median Longitude: 170.255600 * South-bound Latitude: -22.930230 * West-bound Longitude: 163.361009 * North-bound Latitude: -15.905370 * East-bound Longitude: -179.140888
Date/Time Start: 2006-03-01T00:00:00 * Date/Time End: 2020-09-27T00:00:00
Event(s):
SOCP-001 (SOCP-FJ-Yadua) * Latitude: -16.815570 * Longitude: 178.313562 * Date/Time Start: 2020-09-27T00:00:00 * Date/Time End: 2020-09-27T00:00:00 * Location: South Pacific * Method/Device: Satellite imagery (SATI)
SOCP-002 (SOCP-FJ-Cicia) * Latitude: -17.740377 * Longitude: -179.317365 * Date/Time Start: 2016-02-25T00:00:00 * Date/Time End: 2016-02-25T00:00:00 * Location: South Pacific * Method/Device: Satellite imagery (SATI)
SOCP-003 (SOCP-FJ-Gau) * Latitude: -18.008304 * Longitude: 179.311975 * Date/Time Start: 2019-07-22T00:00:00 * Date/Time End: 2019-07-22T00:00:00 * Location: South Pacific * Method/Device: Satellite imagery (SATI)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventNozik, Alexandra
2LONGITUDELongitudeNozik, AlexandraGeocode
3LATITUDELatitudeNozik, AlexandraGeocode
4IdentificationIDNozik, AlexandraPassage
5LocationLocationNozik, AlexandraIsland
6TypeTypeNozik, Alexandra
7Distance to shoreDist shoremNozik, AlexandraObtained from Geographic Information System (GIS)
8WidthwmNozik, AlexandraObtained from Geographic Information System (GIS)minimum passage width
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
565 data points

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