26590 Bethic Mapping Data Set Published / External 23141 Aquaculture Systems & Ecology Branch (ASEB) Project Completed QTCView is used with an incorporated depthfinder to create a sonar map of the bottom to the west of the Charles Island, in Long Island Sound in Connecticut waters. Two maps are created, one at 50 kHz and one at 200 kHz to compare the results. Video is being used to groundtruth the bottom type classifications identified by the sonar. To compare the two maps to see if different frequencies result in different classifications. Theme GIS Theme QTC View Theme bottom classification Theme habitat Theme map Theme video Temporal 2012 - present Temporal continuous Spatial Charles Island Spatial Long Island Sound Stratum benthic NEFSC Milford Lab Milford CT USA Data Set MS Excel Spreadsheet Continually Map (digital) and Video (digital) QTCView, Underwater video camera (SeaViewer) Ship not applicable Data Steward 2017-03 Person Clark, Paul E paul.clark@noaa.gov 212 Rogers Avenue Milford CT 06460-6499 USA 203-882-6542 Distributor 2012 Organization Northeast Fisheries Science Center NEFSC https://ror.org/02nc0ck44 166 Water Street Woods Hole MA 02543-1026 USA (508)495-2000 https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center NEFSC Home Page Online Resource 8:00 a.m. to 4:30 p.m. Monday - Friday Metadata Contact 2017-03 Person Clark, Paul E paul.clark@noaa.gov 212 Rogers Avenue Milford CT 06460-6499 USA 203-882-6542 Originator 2012 2016 Person Pereira, Jose Jose.Pereira@noaa.gov 212 Rogers Avenue Milford CT 06460-6499 USA 203-882-6538 Point of Contact 2017-03 Person Milke, Lisa M lisa.milke@noaa.gov 212 Rogers Avenue Milford CT 06460-6499 USA 203-882-6528 203-882-6570 -73.088889 -73.052778 41.194444 41.169444 West of Charles Island in Long Island Sound near Milford, CT Continuing 2012 Unclassified Data is not accessible at current time as it is still being edited Data is not accessible at current time as it is still being edited NEFSC Data Access Procedure: 1. Formal request in writing usually to the data owner/contact or Center Director; 2. Requester is contacted by data owner to review and verify the request content and details for data delivery options. 3. If data is confidential then owner will determine if the data may be released to the requester; 4. If data can be released, the data is downloaded and packaged for delivery electronically; or the requester may be directed to where the data is available online. Data is not accessible at current time as it is still being edited NEFSC Data Access Constraints: If data is stored on an internal NEFSC network, the requester may not have direct access to query the data unless they are also authorized for network access. https://console.cloud.google.com/storage/browser/nmfs_odp_nefsc/PARR/EAD/ASEB/26590 2 Files: WCI50_seabed_2.xlsx WCI20001_seabed_uncorr.xlsx https://nefsc.noaa.gov/nefsc/Milford/staff/pereira.html Online Resource HTML Milford Staff Web Page Dr. Jose J. Pereira Excel on server, video on DVDs Sonar data contains water depth as a variable. Data was collected on different days at different stages of the tide. Since there is a 6 foot tidal range in Connecticut, this causes artifacts in the data which mask the true topography. Data has not been corrected to some standard stage of tide. Unknown because data is still in process of being edited Sonar echoes are examined individually and poor ones (out of range, multipath errors) are removed. Yes Unknown Yes No Yes Not yet available Other Unknown Data is stored on our network server which is backed up daily, Remote backups. Using QTC View and depth finder and video to groundtruth the sonar returns and create habitat map of bottom gov.noaa.nmfs.inport:26590 Patricia Jones 2015-08-25T06:56:49 SysAdmin InPortAdmin 2026-03-04T19:17:17 2017-02-16 Northeast Fisheries Science Center NEFSC 166 Water Street Woods Hole MA 02543-1026 USA (508)495-2000 https://www.nefsc.noaa.gov 8:00 a.m. to 4:30 p.m. Monday - Friday 1001 Public No No 2017-02-16 1 Year 2018-02-16