Table T6. Summary of autonomous temperature logger deployment with Expedition 301 CORK systems.
Hole |
Data logger |
Position on sensor string |
Depth (mbsf) |
---|---|---|---|
1026B | O597 | Bottom of middle OsmoSampler | 205.5 |
|
A005 | Bottom of deepest (3rd) OsmoSampler | 210.5 |
U1301A | A006 | 52 m down lower Spectra section | 266 |
|
A003 | 57 m down lower Spectra section | 270.8 |
|
O595 | Bottom of top OsmoSampler | 275.5 |
|
A001 | Middle of second OsmoSampler | 279.3 |
|
O596 | Bottom of third OsmoSampler | 283 |
|
A002 | Bottom of deepest (4th) OsmoSampler | 286.8 |
U1301B | A010 | 270 m in upper Spectra section | 266 |
|
O599 | 294 m in upper Spectra section | 290 |
|
O600 | 318 m in upper Spectra section | 314 |
|
O601 | 342 m in upper Spectra section | 338 |
|
A011 | 365 m in upper Spectra section | 361 |
|
A012 | 10 m in middle Spectra section | 383 |
|
A014 | 30 m in middle Spectra section | 402 |
|
A016 | 50 m in middle Spectra section | 421 |
|
A017 | 70 m in middle Spectra section | 440 |
|
A018 | 90 m in middle Spectra section | 459 |
|
A020 | 15 m in lowest Spectra section | 483.5 |
|
A009 | Bottom of top OsmoSampler | 510 |
|
A019 | Bottom of 4th OsmoSampler | 521.5 |
|
A007 | Bottom of deepest (6th) OsmoSampler | 528 |
Notes: A### = Antares 16-bit loggers, programmed for logger maximum of 65,000 samples at 1 h intervals, S/N 1857###C. O### = Onset 12-bit loggers, programmed for logger maximum of 43,000 samples at 1.5 h intervals. Strings in Holes 1026B and U1301A used two sections of Spectra rope, one between top seal plug and intermediate sinker bar, the other between intermediate sinker bar and bottom seal plug. A third section of Spectra was added in Hole U1301B, hanging below lower seal plug. Positions of top and bottom seal plugs are well determined relative to seafloor, but the slack built into the sensor strings (2 m in Holes 1026B and U1301A; 6 m in Hole U1301B) is assumed to be taken up evenly in Spectra between intermediate sinker bar and lower seal plug. Therefore, uncertainty in position below seafloor is greater for sensors in lower section of Spectra rope.
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