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USGS Coastal and Marine Geology Program

Field Activity Details for field activity 2016-042-FA

Other ID: none

Status: Completed

Organization(s): Other

Funding Program(s): USGS GAS HYDRATES (LQ000FP)

Principal Investigator(s): John Pohlman

Affiliate Investigator(s):

Information Specialist(s): Michael Casso

Data Type(s): Geochemical: Surveys (geochemical), Sampling: Chemistry

Scientific Purpose/Goals: Participate in greenhouse gas intercalibration study


Start Port/Location: Rostock Germany

End Port/Location: Rostock Germany

Start Date: 2016-10-15

End Date: 2016-10-22

Equipment Used: Cavity Ring-Down Spectroscopy (CRDS)

Information to be Derived: laser spectrometer data

Summary of Activity and Data Gathered: John Pohlman and Michael Casso (USGS) participated in an intercalibration research cruise in the Baltic Sea, to measure dissolved methane and carbon dioxide concentration and their del 13C values in seawater. Our 2-person scientific party worked alongside other international researchers from October 16 to October 21, 2016, aboard the research vessel Elisabeth Mann Borgese (Leibniz-Institüt fur Ostseeforschung Warnemünde, Rostock, Germany). The vessel visited 11 stations in the Baltic Sea where water samples were collected, for analysis by the various research groups. We analyzed 98 discrete water samples for methane and carbon dioxide, using cavity ring-down spectrometers (CRDS). Additionally x km of track line of continuous surface water measurements were made while the ship was underway.

Staff: Michael Casso, John Pohlman

Affiliate Staff:



Baltic Sea

North: 55.70699785 South: 53.75410576 West: 10.34912109 East: 15.86474609


photo of Elisabeth Mann Borgese
Elisabeth Mann Borgese



Data Acquired

Survey EquipmentSurvey InfoData Type(s)Data Collected
Cavity Ring-Down Spectroscopy (CRDS) --- CO2
Experiments (geochemical)
Surveys (geochemical)

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