Habitat Mapping Cruise - Hudson Canyon (HB0904)

Metadata Updated: March 10, 2021

Objectives are to: 1) perform multibeam mapping of transitional and deepwater habitats in Hudson Canyon (off New Jersey) with the National Institute of Undersea Science and Technology (NIUST) AUV Eagle Ray. About one half of the shelf portion of the canyon was mapped with Eagle Ray between 2007 aboard Ronald H. Brown and 2008 aboard Henry B. Bigelow. We seek to complete the mapping of the shelf segment of the Hudson Canyon on this cruise; 2) perform visual ground truthing of areas up to 1,000 m deep in Hudson Canyon using the NIUST AUV Mola Mola. In particular, we will be investigating ravines in canyon walls mapped by Eagle Ray for vulnerable deepwater coral and sponge communities, tilefish pueblo villages, and suspected areas of methane blowouts in the canyon bottom for vulnerable chemosynthetic communities. Such vulnerable communities may be at risk due to overlap with deepsea red crab, witch flounder, and/or monkfish distributions. The intention is to detect and locate vulnerable communities and also to gain experience for development of protocols for further exploration for vulnerable deepwater habitats in canyon and slope areas; 3) perform a series of CTD/rosette sampler casts down the canyon to a maximum depth of about 1,200 m in the canyon axis. This will provide a near-synoptic, 3-dimensional view of water mass interaction around Hudson Canyon and allow collection of water samples at multiple depths for dissolved methane analysis. The latter will help resolve the source of elevated methane previously detected in deep water within Hudson Canyon. Possible discovery of a local seep raises the possibility of a chemosynthetic community supported by that feature; and 4) collect ME70 multibeam sonar data for purposes of benthic mapping in order to resolve some issues encountered during summer 2008 cruises for that purpose.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date March 10, 2021
Metadata Updated Date March 10, 2021
Data Update Frequency irregular

Metadata Source

Harvested from Commerce Non Spatial Data.json Harvest Source

Additional Metadata

Resource Type Dataset
Metadata Created Date March 10, 2021
Metadata Updated Date March 10, 2021
Publisher NEFSC (Principal Investigator)
Unique Identifier Unknown
Maintainer
Identifier gov.noaa.ngdc.mgg.wcd:HB0904_EK60
Language en-US
Data Last Modified 2009-08-24
Public Access Level public
Data Update Frequency irregular
Bureau Code 006:48
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Old Spatial {"type": "Polygon", "coordinates": -75.1326244149, 38.7606257813, -71.3162783333, 38.7606257813, -71.3162783333, 41.614055, -75.1326244149, 41.614055, -75.1326244149, 38.7606257813}
Program Code 006:059
Source Datajson Identifier True
Source Hash c821be7f43fc9844e5389c105a130203e34cb8b9
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -75.1326244149, 38.7606257813, -71.3162783333, 38.7606257813, -71.3162783333, 41.614055, -75.1326244149, 41.614055, -75.1326244149, 38.7606257813}
Temporal 2009-08-24T12:40:00/2009-09-08T13:58:48

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