Canadian National Marine Seismic Data Repository

Canadian National Marine Seismic Data Repository The Geological Survey of Canada (Atlantic and Pacific) has collected marine survey field records on marine expeditions for over 50 years. This release makes available the results of an ongoing effort to scan and convert our inventory of analog marine survey field records (seismic, sidescan and sounder) to digital format. These records were scanned at 300 dpi and converted into JPEG2000 format. Typically, each of these files was between 1 to 2 gbyte in size before compression and compressed by a factor of 10:1. Empirical tests with a number of data sets suggest that there is minimal visual distortion of the scanned data at this level of compression. In this KML file, scanned data are available in a reduced-scale thumbnail format and a compressed full-resolution JPEG2000 format. 2020-12-09 Natural Resources Canada nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca Form DescriptorsNature and EnvironmentScience and Technologygeophysicsgeologymarineearth sciencesseismicsidescan sonarhigh resolutiongeographic information systemsub-bottom sounderGeologyGeophysicsOcean floorSeismology Canadian National Marine Seismic Data Repository - FrenchESRI REST https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/CGC_Imagerie_Sismique/MapServer Canadian National Marine Seismic Data Repository - EnglishESRI REST https://maps-cartes.services.geo.ca/server_serveur/rest/services/NRCan/GSC_Seismic_Reflection/MapServer Canadian National Marine Seismic Data Repository - EnglishFGDB/GDB https://ftp.maps.canada.ca/pub/nrcan_rncan/Seismology_Sismologie/Seismic_Reflection-Imagerie_Sismique/GSC_Seismic_Reflection.gdb.zip Canadian National Marine Seismic Data Repository - FrenchFGDB/GDB https://ftp.maps.canada.ca/pub/nrcan_rncan/Seismology_Sismologie/Seismic_Reflection-Imagerie_Sismique/CGC_Imagerie_Sismique.gdb.zip Canadian National Marine Seismic Data Repository - EnglishWMS https://maps-cartes.services.geo.ca/server_serveur/services/NRCan/GSC_Seismic_Reflection/MapServer/WMSServer?service=WMS&version=1.3.0&request=GetCapabilities Canadian National Marine Seismic Data Repository - FrenchWMS https://maps-cartes.services.geo.ca/server_serveur/services/NRCan/CGC_Imagerie_Sismique/MapServer/WMSServer?service=WMS&version=1.3.0&request=GetCapabilities

The Geological Survey of Canada (Atlantic and Pacific) has collected marine survey field records on marine expeditions for over 50 years. This release makes available the results of an ongoing effort to scan and convert our inventory of analog marine survey field records (seismic, sidescan and sounder) to digital format. These records were scanned at 300 dpi and converted into JPEG2000 format. Typically, each of these files was between 1 to 2 gbyte in size before compression and compressed by a factor of 10:1. Empirical tests with a number of data sets suggest that there is minimal visual distortion of the scanned data at this level of compression. In this KML file, scanned data are available in a reduced-scale thumbnail format and a compressed full-resolution JPEG2000 format.

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Electronic Mail Address: nrcan.gsc-geosciencedata-donneesgeoscience-cgc.rncan@canada.ca

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