BODC Cruise Metadata Report for RRS James Clark Ross (74JC) cruise JR20090804 (JR175)
Introduction
This report collates information from the BODC cruise inventory and oceanographic databases. It presents
- Cruise Inventory Information
- A summary of BODC data holdings for the cruise from the
- References - including cruise tracks and cruise reports
Cruise Inventory Information
| Long name | RRS James Clark Ross (74JC) cruise JR20090804 (JR175) |
|---|---|
| Short name | JR20090804 (JR175) |
| Objectives and Narrative |
Marine geophysical and geological investigations of past flow and stability of a major Greenland ice stream in the late Quaternary
The aim of cruise JR175 to the West Greenland continental margin and Baffin Bay was to collect blocks of marine geophysical data using EM120 multibeam swath bathymetry and subbottom profiling, as well as transects of sediment cores using vibro-, box, and gravity coring from the continental shelf, slope and adjoining deep-sea basin offshore of Jakobshavns Isbrae in order to answer a number of scientific questions including: - How long has this ice stream been in existence, what were its dimensions during past glaciations and particularly the LGM? - When and how rapidly did it last retreat from the continental shelf of Greenland? - What are the processes responsible for the high flow velocities of this ice stream and what are the major controls on its location? - What is the nature of sedimentation associated with Jakobshavns Isbrae and has it undergone large-scale collapse prior to modern times? |
| Ship | RRS James Clark Ross |
| Departure Port | Falmouth, United Kingdom |
| Departure Date | 2009-08-04 |
| Arrival Port | Immingham, United Kingdom |
| Arrival Date | 2009-09-11 |
| Principal Scientist(s) | Colm O'Cofaigh (University of Durham Department of Geography) |
| Responsible Organisation | University of Durham, Department of Earth Sciences |
| Associated Project(s) | |
| IHB Sea Areas Visited | The Northwestern Passages - Baffin Bay |
| Marsden Squares Visited | 222/223/258/259 |
| Work Area Description | West Greenland and Baffin Bay |
| Unable to lookup cruise bounds at this time | |
| Work Area Bounding Polygon | |
| Southern Limit | unknown |
| Northern Limit | unknown |
| Western Limit | unknown |
| Eastern Limit | unknown |
Cruise Inventory Datasets
| Physical oceanography | |
|---|---|
| Bathythermograph |
Quantity:
number of profiles =
33
Description: XBTs collected for underway correction of EM120 multibeam swath bathymetry data |
| CTD stations |
Quantity:
number of stations =
7
Description: CTD stations. |
| Geology and geophysics | |
| Core - soft bottom |
Quantity:
number of cores =
55
Description: 46 vibrocores (up to 6 m in length), 3 gravity cores (up to 6 m in length), 6 box cores (up to 0.49 m long) |
| Multi-beam echosounding |
Quantity:
activity duration in days =
28
Description: EM120 multibeam swath bathymetry data collection |
| Other geological/geophysical measurements |
Quantity:
activity duration in days =
28
Description: TOPAS sub-bottom profiler data collection |
Cruise Inventory Mooring/Buoy Operations
No information on datasets is currently available
Summary of BODC Data Holdings for the Cruise
National Oceanographic Database
No data currently held for this cruise in the BODC National Oceanographic Database
Project Database
No data currently held for this cruise in the BODC Project Database
