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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2006-020-FA

Other ID: none

Status: Completed

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

Funding Program(s):

Principal Investigator(s): John Crusius

Affiliate Investigator(s): Dirk Koopmans

Information Specialist(s): Dirk Koopmans

Data Type(s): Environmental Data: Current, Imagery: Photo, Sampling: Chemistry

Scientific Purpose/Goals: To estimate groundwater flux to West Falmouth Harbor using primarily radon and radium as radioisotopic tracers of ground water.


Start Port/Location: West Falmouth Harbor, Falmouth, MA

End Port/Location: West Falmouth Harbor, Falmouth, MA

Start Date: 2006-06-21

End Date: 2006-06-28

Equipment Used: Niskin water sampler, Seepage meters, Digital camera

Information to be Derived:

Summary of Activity and Data Gathered: Seepage meters were used in various parts of West Falmouth Harbor to produce direct estimates of discharge across the sediment-water interface. On June 21st, a set of 6 were positioned in the intertidal zone, perpendicular to the shoreline, opposite the Chappaquoit Beach parking lot (41.59882N, -70.64622W). Every hour for six hours (one tidal cycle), seepage bags were removed, and the salinity and volume of seepage was measured. On June 27 and 28, the seepage meters were repositioned as follows: one set of 5 in the intertidal zone of Snug Harbor, a northeastern cove (41.60703N, -70.63656W), and another set of 5 in the intertidal zone on the south side of the public landing (41.60368N, -70.64008W). On the 27th, the meters were lined up parallel to the shoreline, and on the 28th they were laid out perpendicular to it. On both days, 6 sets of measurements were made over a six-hour period at both locations.

Staff: John Crusius, Laura Erban, Dirk Koopmans, Max Nepstad, Diomaris Padilla

Affiliate Staff:

Notes: Related field activities:,,,


West Falmouth Harbor, Snug Harbor, Falmouth, Buzzards Bay, Massachusetts, United States, North America, North Atlantic;

North: 41.61 South: 41.59 West: -70.65 East: -70.63


photo of on foot
on foot



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Seepage meters --- Current
Digital camera --- Photo
2006-020-FA-PH-001 ( Deck photos of field activity operations)
Niskin water sampler --- Chemistry
2006-020-FA-SC-001 ( niskin sampler)

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