USGS Coastal and Marine Geology Program

Coastal & Marine Geology Program

Field Activity Details for field activity 2000-049-FA

Other ID: IB H-49-00-CH

Status: Completed

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

Funding Program(s):

Location: Chesapeake Bay, Norfolk, Virginia to Annapolis, Maryland, United States, North America, North Atlantic;

Principal Investigator(s): John Bratton

Affiliate Investigator(s): Tom Boyd, Naval Research Lab

Information Specialist(s):

Data Type(s): Environmental Data: CTD, Sampling: Chemistry, Environmental Data: Conductivity, Sampling: Biology, Sampling: Geology, Location-Elevation: Navigation

Scientific Purpose/Goals: Coring and resampling of porewater from site MD99-2205 sampled in June 1999 from R/V MARION DUFRESNE (DFRN99026).

Vehicle(s):

Start Date: 2000-03-17

Start Port/Location: Norfolk, VA

End Date: 2000-03-18

End Port/Location: Norfolk, VA

Equipment Used: SBE 9 CTD, Niskin water sampler, Trident subsurface porewater conductivity probe, Corer - gravity, Box corer, DGPS, Pore water sampling

Information to be Derived:

Summary of Activity and Data Gathered: Two gravity cores were collected at a site near Parker Creek as follows: PK2000-1 38deg33.9395 N, 76deg26.6730 W, 16.4 m, recovery 240 cm, 8 porewater samples at 25 cm spacing; PK2000-2 38deg33.9418 N, 76deg26.6826 W, 16.2 m, recovery 230 cm, 23 porewater samples at 10 cm spacing. Samples analyzed onshore for total methane by Pohlman at NRL, chloride by ion chromatograph at MBL by Bratton.

Staff: John Bratton

Affiliate Staff:
Tom Boyd
NRL: sampled marine
brackish
and fresh water for bacterial cultures to study degradation of dissolved organic matter; John Pohlman
NRL (contractor): assisted Boyd and Bratton
collected box core from Miocene sea floor outcrop for Peter Vogt from NRL.

Notes:
Project = Chesapeake Bay Ecosystem History, Chesapeake Bay Ecosystem History

Location Map:

Platform(s):

photo of Cape Henlopen
Cape Henlopen

Publications

Bratton, J.F., 2010, The three scales of submarine groundwater flow and discharge across passive continental margins: The Journal of Geology, v. 118 no. 5, doi: 10.1086/655114.

Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
SBE 9 CTD --- CTD
Niskin water sampler --- Chemistry
Trident subsurface porewater conductivity probe --- Conductivity
Corer - gravity --- Geology
Box corer --- Biology
Geology
DGPS --- Navigation
Pore water sampling --- Chemistry