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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 1981-009-FA

Other ID: OC95

Status: Completed

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

Funding Program(s):

Principal Investigator(s): Bradford Butman

Affiliate Investigator(s):

Information Specialist(s):

Data Type(s): Environmental Data: CTD, Environmental Data: Temperature, Imagery: Photo, Location-Elevation: Navigation, Sampling: Chemistry, Sampling: Geology, Sonar: Single Beam, Time Series: Mooring (physical oceanography)

Scientific Purpose/Goals: Recover 16 moorings, 3 tripods, and 5 buoys; deploy 4 moorings and 2 tripods; recover buoys GKQ unrecovered Oct. and Nov. 1980, OCNS 88, 90 cruises. Collect XBT, CTD and bathymetry data in and around Lydonia Canyon. Obtain surface grab samples at Stations A, K, Q, and LCA.


Start Port/Location: Woods Hole, MA

End Port/Location: Woods Hole, MA

Start Date: 1981-04-23

End Date: 1981-05-06

Equipment Used: Echosounder, XBT, CTD 19+ with OBS, PAR, DO, Chl, Niskin bottle, Van Veen grab sampler, Camera- deep sea, Northstar 6000 LORAN-C, Bottom platform

Information to be Derived: Time series data; Samples and chemical analysis; Grain size analysis;

Summary of Activity and Data Gathered: All current moorings, tripods and surface buoys were recovered as planned, except the surface mooring at LCL and the subsurface mooring of LCE. Three (of 3) shallow tripods, 3 (of 4) deep tripods, 18 (of 21) sediment traps and 32 (of 34) VACMs were recovered. Preliminary indications are that the data return from the instruments and sediment traps was good. A minimum of nutrient and suspended sediment profiling was conducted due to time spent dragging for the two tripods and the mooring at LCE. A mooring with current meter and two sediment traps was deployed at LCE to obtain information where the mooring was not recovered. Moorings deployed: 6 (#223, 224, 225, 226, 227, and 228 all recovered FA 81034 OCEANUS 104 Sep. 25 - Oct. 2, 1981). Moorings recovered: 18 (#203, 204, 210, 212, and 213, deployed FA 80030 OCEANUS 88 Oct. 23-31,1980; #205, 207, 208, 209, 211 (partial), 214, 215, 216, 217, 218, 219, and 220 deployed FA 80034 OCEANUS 90 Nov. 24 - Dec. 3, 1980; and #221 and 222 deployed FA 81002 OCEANUS 91 Jan. 16-22, 1981). Surface buoys recovered: 6; CTD stations: 27; XBT stations: 41; Grab samples: 72; Bathymetric surveys: 4 (Sites C, D, F, and G).

Staff: Michael Bothner, Bradford Butman, Mary E. Hastings, John Larson, Gregory Miller, Carol M. Parmenter, Richard Rendigs, Marlene Noble

Affiliate Staff:
David Brewster
Frank Musialowski; Andy Eliason - Eliason Data Services; Rose Petrecca - WHOI

Notes: Moorings at LCE and LCL unrecovered. Original Center People field contained: Brad Butman, Chief Scientist; Mike Bothner, David Brewster, John Larson, Greg Miller, Frank Musialowski, Marlene Noble, Carol Parmenter, Richard Rendigs, Polly Shoukimas.
Project = Sediment Dynamics, Sediment Dynamics


Georges Bank, Lydonia Canyon, United States, North America, North Atlantic;

North: 41.51778 South: 40.1225 West: -70.8847 East: -67.41139


photo of Oceanus


Butman, B., 1988, North Atlantic Slope and Canyon Study—Volume 1, Executive summary: U.S. Geological Survey Open-File Report 88-027-A,

Butman, B., and Conley, S.J., 1984, Lydonia Canyon experiment—data report for moored array deployment I, October 1980-April 1981: U.S. Geological Survey Open-File Report 84-201,

Butman, B., and Moody, J.A., 1984, Bathymetric map of Lydonia Canyon, U.S. Atlantic Outer Continental Shelf: U.S. Geological Survey Miscellaneous Field Studies Map 1710,

Moody, J.A., Butman, B., Conley, S.J., 1986, Hydrography of Lydonia Canyon; data report for R/V Oceanus cruise 95, April-May 1981: U.S. Geological Survey Open-File Report 86-286,


Documents associated with this activity

Title Survey Equipment Description
Cruise report (document not focused on specific equipment) Chief Scientist's daily log of ship movement, equipment and data acquisition notes, personnel activities, sample listing, trackmaps, bridge Loran log.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Echosounder --- Single Beam
1981-009-FA-SE-001 ( Collection of paper record displays of seismic data( E/S) for lines )
XBT --- Temperature
CTD 19+ with OBS, PAR, DO, Chl --- CTD
1981-009-FA-OM-001 (Digital tape(s) of NV, NV-NSTAR-FINAL, CTD STATION DATA, )
Niskin bottle --- Chemistry
Van Veen grab sampler --- Geology
Camera- deep sea --- Photo
1981-009-FA-PH-001 (film collection of TRIPOD 224; 19810426-19810926)
Northstar 6000 LORAN-C --- Navigation
1981-009-FA-LN-001 (Navigation trackline plot for field activity 81009)
1981-009-FA-LN-002 (Digital tape(s) of NV, NV-NSTAR-FINAL, CTD STATION DATA, )
Bottom platform --- Mooring (physical oceanography)
1981-009-FA-OM-002 (Lydonia Canyon mooring data )

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