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RRS Discovery D342
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D342 |
Cruise period | 2009-08-18 — 2009-09-18 |
Status | Completed |
Port of departure | Glasgow, United Kingdom |
Port of return | Glasgow, United Kingdom |
Purpose | Research |
Objectives | Site survey work (shallow seismic survey and gravity core sampling) at 16 sites of proposed drilling in the North Atlantic (Irish and UK waters). Additional seismic work and sampling in the area was undertaken, details below.
Gravity and magnetic data were recorded during seismic surveys and also over 4 transects across the Rockall Trough and Rockall Hatton Basin. |
Chief scientist | Alick Leslie (British Geological Survey, Edinburgh) |
Cruise report | (3.61 MB) |
Ocean/sea areas | |
General | North East Atlantic Ocean (limit 40W) |
Specific | Rockall Trough; Rockall Hatton Basin |
Track charts | (0.33 MB) |
Measurements | |
Physical oceanography | |
Bathythermograph | Quantity: number of profiles = 102 Description: XBT. Vertical P/T profiles through water column taken during seismic survey |
Geology and geophysics | |
Core - soft bottom | Quantity: number of cores = 16 Description: Site survey work in North Atlantic, high resolution seismic survey and 3m cores. 7 sites in Irish waters (on the Irish Shelf, Porcupine Bank and Rockall Bank) and 9 sites in UK waters (Rockall Bank, Rockall Hatton Basin and Hatton Bank). |
Core - soft bottom | Quantity: number of cores = 1 Description: 5m core in Rockall Trough, taken to compliment existing samples in ongoing research. |
Single channel seismic reflection | Quantity: number of cores = 16 Description: Site survey work in North Atlantic, high resolution seismic survey and 3m cores. 7 sites in Irish waters (on the Irish Shelf, Porcupine Bank and Rockall Bank) and 9 sites in UK waters (Rockall Bank, Rockall Hatton Basin and Hatton Bank). |
Single channel seismic reflection | Quantity: track kilometres = 430 Description: 3 regional seismic survey lines in North Atlantic over George Bligh Bank |
Single channel seismic reflection | Quantity: track kilometres = 50 Description: 3 short seismic lines over Anton Dohrn Seamount. |
Gravity measurements | Quantity: track kilometres = 50 Description: 3 short seismic lines over Anton Dohrn Seamount. |
Gravity measurements | Quantity: number of cores = 16 Description: Site survey work in North Atlantic, high resolution seismic survey and 3m cores. 7 sites in Irish waters (on the Irish Shelf, Porcupine Bank and Rockall Bank) and 9 sites in UK waters (Rockall Bank, Rockall Hatton Basin and Hatton Bank). |
Gravity measurements | Quantity: number of profiles = 4 Description: 4 gravity / magnetic profiles over Rockall Trough and Rockall Hatton Basin = 1448 km |
Gravity measurements | Quantity: track kilometres = 430 Description: 3 regional seismic survey lines in North Atlantic over George Bligh Bank |
Magnetic measurements | Quantity: number of cores = 16 Description: Site survey work in North Atlantic, high resolution seismic survey and 3m cores. 7 sites in Irish waters (on the Irish Shelf, Porcupine Bank and Rockall Bank) and 9 sites in UK waters (Rockall Bank, Rockall Hatton Basin and Hatton Bank). |
Magnetic measurements | Quantity: track kilometres = 50 Description: 3 short seismic lines over Anton Dohrn Seamount. |
Magnetic measurements | Quantity: number of profiles = 4 Description: 4 gravity / magnetic profiles over Rockall Trough and Rockall Hatton Basin = 1448 km |
Magnetic measurements | Quantity: track kilometres = 430 Description: 3 regional seismic survey lines in North Atlantic over George Bligh Bank |