Site: SWPAC-7B
Track line SWPAC-7B
Seismic line SWPAC-7B

Priority: 1
Position: 5053.88'S, 17659.81'E
Water Depth: 4505 m
Sediment Thickness: 776 m
Target Drilling Depth: 410 m
Approved Maximum Penetration: 510 m
Seismic Coverage: Eltanin 43, NIWAR 3034 Lines 16 and 17

Objectives: The objectives of SWPAC-7B are to:

  1. Determine history of CDW incursions into SW Pacific.
  2. Evaluate grain-size signals (flow speed) to determine water mass movement at this site to estimate the velocity behavior of the DWBC.
  3. This site will be important for assessing the extent to which the ACC acts as a driving force for CDW inflow.

Drilling Program: Double APC, XCB

Logging and Downhole Operations: Triple combo, FMS/Sonic, GHMT

Nature of Rock Anticipated: Sand and Mn nodules on surface; foraminiferal ooze and terrigenous mud

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