West Coast Canadian National Marine Seismic Data Repository

This release makes available the West Canadian Coast part of the results of an ongoing effort to scan and convert all our inventory of analog marine survey field records (seismic, sidescan and sounder) to digital format. These records have been scanned at 300 dpi and were converted into JPEG2000 format. Typically each of these files were from 1 to 2 gbyte in size before compression, and were 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-resolultion JPEG2000 format.

Data and Resources

Additional Info

Field Value
Last Updated April 17, 2026, 20:46 (UTC)
Created April 17, 2026, 20:46 (UTC)
contact_email bob.courtney@Canada.ca
contact_person {"fr": "Gouvernement du Canada; Ressources naturelles Canada; Secteur des sciences de la Terre; Centre canadien de cartographie et d'observation de la Terre,NRCan.Geoinfo.RNCan@Canada.ca", "en": "Government of Canada; Natural Resources Canada; Earth Sciences Sector; Canada Centre for Mapping and Earth Observation,voice; 1 (800) 6612638,NRCan.Geoinfo.RNCan@Canada.ca"}
criticality_level []
data_dictionary EPSG:4269,http://www.epsg-registry.org,8.6.2
geographic_scope []
open_canada_collection fgp
open_canada_date_published 2017-01-01 00:00:00
open_canada_keywords {"fr": ["Canada", "Sismiques", "Marin", "Sonar latéral", "Haute résolution", "Sonde de fond", "Sciences de la terre", "Géologie", "Géophysique", "Système d'information géographique"], "en": ["Canada", "Seismic", "Marine", "Sidescan Sonar", "High resolution", "Sub-bottom sounder", "Earth sciences", "Geology", "Geophysics", "Geographic information systems"]}
open_canada_subject ["form_descriptors", "nature_and_environment", "science_and_technology"]
sensitivity_level unrestricted
title_fr Répertoire de données sismiques maritimes nationales de la côte ouest
update_frequency irregular