Chain Cruise 2
Completed
Operating area: Equatorial Atlantic at 1.5S and 15W.
Route: Porto Grande (SÒo Vicente) - Cape Verde → Porto Grande (SÒo Vicente) - Cape Verde
Lamont-Doherty Earth Observatory
Project aboard
An interdisciplinary field program to study the structure, composition, and seismicity of the Chain Transform Fault. An ocean bottom seismometer array was deployed in Nov 2025 to record microseismicity on the fault. These OBS were scheduled for recovery in Oct/Nov 2025, but are now being recovered in Mar 2025, 8 months ahead of schedule due to the OBS recall by NSF.
People aboard
- Jessica Warren · Principal investigator
- Mark Behn · Chief scientist
- Jessica Warren · Chief scientist
Party size: 4
Estimated vacant berths: 31
Equipment
Aboard the vessel
- Ship Fitted Winches & Wires
- Crane
- Stern A-Frame
- Navigation - Heading/Position
- Dynamic Positioning (DP)
- Echosounder, 3.5kHz CHIRP
- Gravimeter
- Multibeam - Deep Water (EM122, EM124)
- Multibeam - Mid-Water (EM302/304)
Pooled / portable
- CTD
- XBT
- Ocean Bottom Seismometers - OBSIC
Science party brings
- Portable Laboratory Vans/Containers - Science Supplied
- Science-provided vans
Schedule data from UNOLS Marine Facilities Planning · operator cruise code NSF/MGL2502-Warren · MFP reference 25/5794 · synced Sep 24, 2026