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USGS CMG 03038 Metadata

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ID 03038
Also Known As 03038
B-1-03-MD
B103MD
Abstract University of Toledo,United States Geological Survey, Woods Hole, Massachusetts,United States Geological Survey, Water Resources Division,Naval Postgraduate School Assataeague Island. Chief Scientists: John Bratton, Dave Krantz. Data (GPS, digitalcamera, peristalticpump, sedimentsqueezer, CTDmeter, downholegammarayprobe, EMinduction, datalogger, computer, drillcore) of field activity 03038 (B-1-03-MD) in Chincoteague Bay, Maryland, United States, North America, North Atlantic from 08/14/2003 to 08/22/2003
Organization University of Toledo
United States Geological Survey, Woods Hole, Massachusetts
United States Geological Survey, Water Resources Division
Naval Postgraduate School Assataeague Island
Project/Theme Coastal Groundwater Systems
Coastal Change Hazards
Chief Scientist John Bratton
Dave Krantz
Platform Barge
Area of Operation Chincoteague Bay, Maryland, United States, North America, North Atlantic, Maryland
Bounding Coordinates
38.50000
-75.45000     -75.05000
37.80000
Ports leave Public Landing, MD
arrive Public Landing, MD
Dates 08/14/2003 (JD 226) to 08/22/2003 (JD 234)
Analog Materials No analog holdings.
Crew
John Bratton Chief Scientist (8/13-8/22), USGS Woods Hole
Sarah Kelsey mobilize, in field 8/13-8/15, USGS Woods Hole
Dirk Koopmans in field, demobilize 8/20-8/22, USGS Woods Hole
Dave Krantz Chief Scientist, Univ. of Toledo
Abbie Norton stratigraphy, geophysics, Univ of Toledo
J.K. Bohlke water sampling and age dating, USGS WRD-Reston
John Earle field water quality parameters and pumps, USGS WRD-Denver and Baltimore
Brian Sturgis logistical support (small boat) and technical assistance, NPS-Assateague Island
Carl Zimmerman logistical support (small boat) and technical assistance, NPS-Assateague Island
Timmy Gargliano Captain
Equipment Used
GPS
digitalcamera
peristalticpump
sedimentsqueezer
CTDmeter
downholegammarayprobe
EMinduction
datalogger
computer
drillcore
Purpose
Study of submarine ground water including borehole geophysics,
porewater squeezing, sediment sampling, ground-water sampling
Summary
On August 14-22 a USGS-led team undertook a complex subsurface field
effort to study the occurrence and chemistry of submarine ground water beneath
Chincoteague Bay, Maryland as a follow-up to earlier surface geophysical
studies.  The area was made famous by Marguerite Henry's 1947 children's book
(and later Disney movie), Misty of Chincoteague, about the wild ponies that live
on the adjacent barrier islands, Chincoteague and Assateague.  Chincoteague Bay
is experiencing nutrient over-enrichment that is of concern to its primary
managers, the National Park Service and the Maryland Department of Natural
Resources.  Submarine discharge of ground water recharged in agricultural areas
on land is suspected to be a major contributor of nitrogen to the bay.  Offshore
work consisting of drilling, geophysical logging, and sampling was performed
from a barge platform, and was augmented with onshore logging of existing wells.
The maximum drilling depth reached by the barge rig was 72 feet beneath the
sediment surface. The field team included John Bratton, Sarah Kelsey, and Dirk
Koopmans (USGS-GD-Woods Hole and contractors); David Krantz and Abby Norton
(University of Toledo); John Earle (USGS-WRD-Denver); and J.K. Bohlke and Craig
Tobias (USGS-WRD-Reston).  Drilling contractors from Hillis-Carnes Engineering
and a barge/tug pilot provided by Hi-Tide Marine Construction consistently
overcame difficult mechanical, geological, and meteorological conditions to get
the science done.  Special thanks go out to National Park Service colleagues
from Assateague Island National Seashore, Brian Sturgis and Carl Zimmerman, who
provided logistical support, shuttle boats, and lodging.  The fieldwork was
conducted safely and efficiently and produced excellent scientific results.
Noteworthy discoveries included the presence of a plume of fully fresh ground
water greater than 25 feet thick extending more than 1/2 mile offshore along the
western side of the bay (Public Landing), a similar plume at the northern end of
the bay (South Point), hypersaline brines underlying part of Assateague Island,
and a widespread buried peat present at the base of the bay's Holocene
sediments.  Downhole gamma and electromagnetic induction logs were obtained from
eight locations.  Ground water samples were collected from nine temporary
subestuarine wells, surface water was obtained from eight locations, and pore
water was squeezed from 35 sediment samples.  Additional analyses for age
dating, nutrients, and stable isotopes will be performed over the coming months.
Notes
Navigation Techniques: Garmin GPS 76, UTM, NAD27 CONUS. HI-TIDE MARINE CONSTRUX 
BARGE, HI-TIDE MARINE CONSTRUCTION, OCEAN CITY, MD
Publications
http://soundwaves.usgs.gov/2003/10/fieldwork2.html
Got Help? For 03038, we would appreciate any information on -- activity type, analog materials, contract, days at sea, dive count, funding, information specialist, information to be derived, kms of navigation, national plan, NGDC Info, owner, project number, scanned materials, seismic description, station count, station description, submersible, tabulated info.
Type Webpage KMZ Arc         Metadata         WHSC
Geochemical       data
Metadata data     txt  data  FAQ  xml data
Navigation data nav      
Times   050.times      

03038 location map of where navigation 

equipment operated

 
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