Alternate Leg ID: Cruise II, Leg II; RP-4-SU-79B
Area of Operations: Yakutat Bay, northeastern Gulf of Alaska, Alaska, United States, North America, North Pacific
Dates: July 19, 1979 to July 27, 1979
Objectives: Detect and locate earthquake activity in the northeast Gulf of Alaska (NEGOA). Obtain measurements of sea floor accelerations accompanying both strong and weak earthquakes. Demonstrate and evaluate the effectiveness of the USGS OBIPs when used in the seismic refraction mode.
Type of Activity: Seismic study
OBIPs deployment and recovery
Information to be derived: Seismic study data
OBIPs performance at deployment and recovery
Summary: OBIP deployments - 13; OBIP recoveries - 8; Seismic refraction - 3 lines, 165 km; Bathymetry/sub-bottom profiling - 580 km; XBT launches - 12; Shipek bottom samples - 8.
USGS Project Number: OBIP
Contact: Bruce Ambuter ()