The Ocean Archive System searches our original datasets as they were submitted to us, not individual points or profiles. If you want to search and retrieve ocean profiles in a common format, or objectively analyzed fields, your better option may be to use one of our project applications. See: Access Data
OAS accession Detail for 0278245
| << previous | |revision: 2 |
| accessions_id: | 0278245 | archive |
|---|---|
| Title: | Nereus dive geo-referenced megafaunal transect data from the Kermadec Trench during cruise TN309 on R/V Thompson, May 2014 (NCEI Accession 0278245) |
| Abstract: | This dataset contains physical data collected on R/V Thomas G. Thompson during cruise TN309 from 2014-04-14 to 2014-05-05. These data include Speed over ground, course over ground, depth, and water temperature. The instruments used to collect these data include Camera and HROV Nereus. These data were collected by Dr Jeffrey C. Drazen of University of Hawaii at Mānoa, Dr Paul Yancey of Whitman College, and Dr Timothy M. Shank of Woods Hole Oceanographic Institution as part of the "Controls on Hadal Megafaunal Community Structure: a Systematic Examination of Pressure, Food Supply, and Topography (HADES)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2019-06-17. The following is the text of the dataset description provided by BCO-DMO: HADES-K - georeferenced macrofauna Dataset Description: This dataset includes geo-referenced megafaunal counts from the Kermadec Trench, April/May 2014. The dives were in the Southwest Pacific, 4000 to ~10,000m from the R/V Thomas G. Thompson during cruise TN309 (HADES-K), April - May 2014. |
| Date received: | 20190617 |
| Start date: | 20140414 |
| End date: | 20140505 |
| Seanames: | |
| West boundary: | 179.81921 |
| East boundary: | -178.9629 |
| North boundary: | -34.3394038 |
| South boundary: | -37.7341475 |
| Observation types: | physical |
| Instrument types: | camera |
| Datatypes: | course over ground, DEPTH - OBSERVATION, speed over ground, WATER TEMPERATURE |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | University of Hawai'i at Mānoa, Woods Hole Oceanographic Institution |
| Contributing projects: | |
| Platforms: | THOMAS G. THOMPSON (3250) |
| Number of observations: | |
| Supplementary information: | Acquisition Description: The HROV Nereus was used to conduct exploration and characterization (including downloading video seafloor transects) of the Kermadec Trench region in May 2014. Geo-referenced vehicle navigation was conducted using R/V Thompson’s GPS launch position of the vehicle, the estimated initial on bottom position of the vehicle, the course over ground (determined by the Gyro heading, Doppler Velocity Profiler, and thruster speed). The HROV transected between 1 and 5 meters off the seafloor, utilizing a down-looking Sony 4k HD camera system, in collaboration with the Advanced Imaging and Visualization Lab at the Woods Hole Oceanographic Institution. Megafauna was enumerated via direct counts from continuous video. Taxonomic identifications were based on comparison with published morphological characters when possible. Nereus transect video was annotated using CADTV version 11 software and geo-referencing of continuous navigation was conducted via Matlab (2011 Release; MathWorks, Inc.) and Microsoft Excel for Mac 14.7.3. Summary of HADES-K Nereus dives: Nereus Dive # Date Mission Depth (m) Dive Duration (hrs:min) # of Transects Bottom Duration (hrs:min) 64 4/14/2014 4000 12:00 1 6:41 72 5/2/2014 6060 17:19 4 9:28 73 5/4/2014 7000 18:04 2 8:09 74 5/5/2014 8100 19:57 1 10:07 75 5/8/2014 9000 13:44 0 2:16 76 5/10/2014 10,000 11:54 2 6:28 |
| Availability date: | |
| Metadata version: | 2 |
| Keydate: | 2023-05-15 04:30:31+00 |
| Editdate: | 2024-04-16 16:47:00+00 |