Purpose: This is Leg 2 of the 2014 Northern Expedition of R/V Rachel Carson. July 31: Depart Bodega Bay and begin transit to Axial Seamount. Legs 2-4 are focused on AUV and ROV seafloor surveys along the volcanic spreading centers of the Juan de Fuca Ridge and Gorda Ridge. The planned AUV survey sites for the entire expedition include the summit, north rift, and south rift of Axial Seamount, Gorda Ridge, North Escanaba Trough, and South Escanaba Trough. Two contingency surveys on Pioneer Seamount offshore San Francisco have been planned in case bad weather precludes AUV operations in the Escanaba Trough. One low altitude survey from ROV Ventana has been planned at Ashes Hydrothermal Vent Field within the summit caldera at Axial Seamount. Leg 2 is planned to include four AUV surveys: two on Axial Seamount South Rift, one on Axial Seamount North Rift, and one at the Axial Seamount summit. After leg 2 surveys, transit to Newport, OR for port stop.
Chief scientist: Dave Caress
Scheduled start time: 8/1/2014 2:00:00 PM UTC
[8/1/2014 7:00:00 AM Pacific]
Scheduled end time: 8/8/2014 11:30:00 PM UTC
[8/8/2014 4:30:00 PM Pacific]
Equipment: Mapping AUV, BPR (bottom pressure recorder), Ocean Imaging survey system integrated with ROV Ventana (400 kHz multibeam, stereo cameras, strobes, INS).