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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1991-039-FA

Other ID: F11-91-HW

Status: Completed

Organization(s): USGS, Woods Hole Coastal and Marine Science Center

Funding Program(s):

Principal Investigator(s): William Schwab

Affiliate Investigator(s): Homa Lee, Michael Torresan - Menlo Park

Information Specialist(s):

Data Type(s): Imagery: Photo, Location-Elevation: Navigation, Sampling: Biology, Sampling: Geology, Sonar: Sidescan

Scientific Purpose/Goals: Investigate mass wasting processes on 2 scales: 1) volcanoclastic flows and lava delta failures related to the present Kupaianaha and 1969-1974 Mauna Ulu eruptions; and 2) the giant Alika Debris Avalanche and South Kona Slump off the west coast. Expect 7 days off Kilauea, 3 days off the west coast and 2 day transit. If sea or bottom conditions off Kilauea prevent us from operating effectively, we will devote more time to the west coast. We will obtain 3 dredge hauls on Puna Ridge. All core samples will be assessed for density, sound velocity and magnetic susceptibility using the Schultheiss Multi-Sensor Whole Core Logger prior to splitting. Box core samples will be subsampled and slabbed. Gravity and piston cores will be split, described and tested for vane shear strength and water content. Mass physical properties will be used to calculate downcore variations in acoustic impedance to use in interpreting acoustic backscatter variations on the GLORIA and MR1 mosaics. We will run high-resolution acoustic profiles off Kilauea in a 6 mile grid from Kaimu to Mamoamoa along with bottom camera runs to define coring stations.


Start Port/Location: Honolulu, HI

End Port/Location: Honolulu, HI

Start Date: 1991-11-15

End Date: 1991-11-27

Equipment Used: DGPS, Corer - slow, Grab sampler - Van Veen , Grab sampler - Shipek, Box corer, Dredge, Digital camera, Q-MIPS sidescan sonar system

Information to be Derived: Sea floor map;

Summary of Activity and Data Gathered: Cores, dredges, photos, video transects, gravity, magnetics, and bathymetry (3.5 kHz, 10 kHz) data.

Staff: William Schwab, William Winters

Affiliate Staff:
Menlo Park: Homa Lee
Co-Chief Sci.; Michael Torreson
Co-Chief Sci.

Notes: No cruise report; information derived from pre-field work reports and field logs.


east Flank Kilauea, Alika Debris Avalanche, south Kona slump, west coast Hawaii, Hawaii, United States, North America, North Pacific;

North: 21.45 South: 18.7 West: -158.05 East: -154.35


photo of Farnella


Scanlon, K.M., 1986, Magnetic and bathymetric data from R/V FARNELLA Cruise FRNL 85-4 in the Puerto Rico and U.S. Virgin Islands Exclusive Economic Zone: U.S. Geological Survey Open-File Report 86-399, 3 p., URL:


Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Corer - slow --- Geology
Box corer --- Biology
Grab sampler - Van Veen --- Geology
1991-039-FA-SC-001 ( GRAB samples)
Grab sampler - Shipek --- Geology
Dredge --- Biology
Digital camera --- Photo
Q-MIPS sidescan sonar system --- Sidescan
DGPS --- Navigation

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