http://lod.bco-dmo.org/id/dataset/785219
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2019-12-30
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Temperature profiles collected from the sediments off the South Atlantic Bight from 2015-05-01 to 2017-05-10
2019-12-30
publication
2019-12-30
revision
BCO-DMO Linked Data URI
2019-12-30
creation
http://lod.bco-dmo.org/id/dataset/785219
Alicia M Wilson
University of South Carolina at Columbia
principalInvestigator
Willard S. Moore
University of South Carolina at Columbia
principalInvestigator
Scott M. White
University of South Carolina at Columbia
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Wilson, A. M., White, S. M., Moore, W. S. (2019) Temperature profiles collected from the sediments off the South Atlantic Bight from 2015-05-01 to 2017-05-10. Biological and Chemical Oceanography Data Management Office (BCO-DMO). Version Date 2019-12-30 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/785219 [access date]
Temperature data profiles collected from the sediments off the South Atlantic Bight. Dataset Description: <p>Heat has been widely used as an inexpensive tracer in groundwater systems (Anderson 2005; Constanz 2008), including studies of SGD (Taniguchi 2000; Moore and Wilson 2005; Martin et al 2006). In our system, the temperature of sub-seafloor porewaters differs from the temperature of overlying seawater owing to seasonal variations in surface temperature. We can thus use heat in two ways: (1) to measure the depth of rapid flushing events and (2) to estimate rates of long-term regional flow.</p> Methods and Sampling: <p>Temperature loggers were installed inside nominal 1 ¼-inch stainless steel wells that were screened over the bottom 30 cm to allow collection of water samples. The wells were sealed at the top (typically 50 cm above the seafloor) with PVC caps, from which HOBOware Tidbit temperature loggers were suspended on a 1.3 cm-wide a strip of polypropylene. Bottom water temperature was collected at each site by a temperature logger protected by a casing made of nominal 1 ¼-inch PVC well screen and attached to the casing near the seafloor. In the spring of 2016 concerns about thermal overturn within the wells led us to install and instrument a second set of casings 2-3 m from the original wells. The new installations, referred to as stakes, were filled with sand after the instrument string was installed, to prevent thermal overturn.&nbsp;</p>
Funding provided by NSF Division of Earth Sciences (NSF EAR) Award Number: EAR-1316250 Award URL: http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1316250
onGoing
Alicia M Wilson
University of South Carolina at Columbia
803-777-1240
School of the Earth Ocean and Environment 701 Sumter Street, EWS 617
Columbia
SC
29208
USA
awilson@geol.sc.edu
pointOfContact
Willard S. Moore
University of South Carolina at Columbia
Department of Earth & Ocean Sciences EWS 617, 701 Sumter St.
Columbia
SC
29208
USA
moore@geol.sc.edu
pointOfContact
Scott M. White
University of South Carolina at Columbia
803-777-6304
School of the Earth, ocean and Environment 701 Sumter Street, EWS 617
Columbia
SC
29208
USA
swhite@geol.sc.edu
pointOfContact
asNeeded
Unknown
date_time
file_name
lat
lon
ISO_DateTime
depth
temp
Onset HOBO TidbiT v2 Water Temperature Data logger
theme
None, User defined
Date and time
file_name
latitude
longitude
depth below seafloor
water temperature
featureType
BCO-DMO Standard Parameters
Onset HOBO TidbiT v2 (UTBI-001) temperature logger
instrument
BCO-DMO Standard Instruments
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Fluid and chemical fluxes across the seafloor of a passive margin
https://www.bco-dmo.org/project/756958
Fluid and chemical fluxes across the seafloor of a passive margin
<p>NSF Abstract:</p>
<p>Submarine groundwater discharge (SGD) is now recognized as an important pathway for the introduction of nutrients, carbon, and metals into coastal ocean waters. The full impact of SGD is uncertain, however, because we do not understand all the driving mechanisms. Whereas most studies of SGD have focused at the coastline, increasing evidence from the South Atlantic Bight indicates that the majority of SGD occurs far (1-70 km) offshore. Mechanisms for discharge far from shore are not yet well understood. Observations from a cluster of seafloor wells 20 km offshore of North Carolina suggest that this discharge reflects slow upward migration of saline fluids from depth. These porefluids are also affected by rapid flushing of sandy seafloor sediments by seawater during storms or migration of cold ocean currents. This project will test the hypothesis that these flow processes are common and drive significant fluid exchange over large areas of the continental shelf. The project will also estimate the geochemical fluxes of radium, nutrients and carbon across the seafloor. The study area will be a 150 square-km area that reaches 20 km offshore near Charleston, South Carolina. Geophysical surveys will map seafloor bathymetry and identify buried sedimentary structures that could channel groundwater traveling upward toward the seafloor. Thermal arrays will be installed to depths of 2-5 m below the seafloor at 10 locations. Data from these arrays will indicate the depth and frequency of rapid ocean-driven flushing and quantify possible long-term upward flow from depth. Three pairs of wells installed in a shore-perpendicular transect will supply pressure data that will provide independent estimates of fluid fluxes. The wells will also be sampled for nutrients, carbon, and radium tracers, which will indicate mixing between radium-poor seawater and radium-enriched pore waters. Geochemical fluxes across the seafloor will be determined based on calculated fluid fluxes and observed geochemical compositions.</p>
<p>The realization that groundwater discharging directly to the ocean supplies significant quantities of nutrients, carbon, and metals to coastal waters represents a paradigm shift in our understanding of geochemical fluxes to the coastal ocean systems. Previously, only inputs from rivers, the atmosphere, and upwelling (exchange with the deeper ocean) were considered. Now, increasing evidence suggests that the volume of saline groundwater that discharges across broad continental shelves is at least as large as river discharge, but the flow mechanisms and chemical compositions of groundwater discharge in offshore regions are very poorly understood. It is essential that studies of submarine groundwater discharge focus farther offshore in order to understand these processes. This work has the potential to spur significant revisions of textbook views of the hydrologic cycle and geochemical budgets for the ocean. In particular, saline groundwater may be supplying significantly greater nutrients (nitrogen and phosphorus) than has previously been realized. These nutrients affect the fertility of coastal ecosystems, which include economically significant fisheries, and may contribute to outbreaks of harmful algae blooms as well as ocean 'dead zones'. The work is designed to include significant student participation, including participation by under-represented groups.</p>
passive margin fluxes
largerWorkCitation
project
eng; USA
oceans
-79.75
-79.75
32.75
32.75
2015-05-01
2017-05-10
Offshore from Isle of Palms, Charleston County, South Carolina 32°45'N 79°45'W
0
BCO-DMO catalogue of parameters from Temperature profiles collected from the sediments off the South Atlantic Bight from 2015-05-01 to 2017-05-10
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/785225.rdf
Name: date_time
Units: unitless
Description: Date and Time in MM/DD/YYYY hh:mm format
http://lod.bco-dmo.org/id/dataset-parameter/785226.rdf
Name: file_name
Units: unitless
Description: name of the original file which the data was submitted
http://lod.bco-dmo.org/id/dataset-parameter/785227.rdf
Name: lat
Units: decimal degrees
Description: latitude with positive values indicating North
http://lod.bco-dmo.org/id/dataset-parameter/785228.rdf
Name: lon
Units: decimal degrees
Description: longitude with negative values indicating West
http://lod.bco-dmo.org/id/dataset-parameter/785229.rdf
Name: ISO_DateTime
Units: unitless
Description: Date and time following the ISO convention in YYYY-MM-DDTHH:mm:ss format
http://lod.bco-dmo.org/id/dataset-parameter/785230.rdf
Name: depth
Units: meters (m)
Description: Depth of logger in sediment
http://lod.bco-dmo.org/id/dataset-parameter/785231.rdf
Name: temp
Units: degrees Celsius (C)
Description: water temperature
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
https://www.bco-dmo.org/dataset/785219/data/download
download
onLine
dataset
<p>Temperature loggers were installed inside nominal 1 ¼-inch stainless steel wells that were screened over the bottom 30 cm to allow collection of water samples. The wells were sealed at the top (typically 50 cm above the seafloor) with PVC caps, from which HOBOware Tidbit temperature loggers were suspended on a 1.3 cm-wide a strip of polypropylene. Bottom water temperature was collected at each site by a temperature logger protected by a casing made of nominal 1 ¼-inch PVC well screen and attached to the casing near the seafloor. In the spring of 2016 concerns about thermal overturn within the wells led us to install and instrument a second set of casings 2-3 m from the original wells. The new installations, referred to as stakes, were filled with sand after the instrument string was installed, to prevent thermal overturn.&nbsp;</p>
Specified by the Principal Investigator(s)
<p>BCO-DMO Processing Notes:<br />
- added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions<br />
-&nbsp;re-formatted date from m/d/yyyy to ISO DateTime format following the convention YYYY-MM-DDTHH:MM:SS<br />
- added lat, lon columns from metadata<br />
- re-organized the data structure into one column for temperature and one column for depth</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Onset HOBO TidbiT v2 Water Temperature Data logger
Onset HOBO TidbiT v2 Water Temperature Data logger
PI Supplied Instrument Name: Onset HOBO TidbiT v2 Water Temperature Data logger PI Supplied Instrument Description:Onset HOBO TidbiT v2 Water Temperature Data logger with 12-bit resolution and has ±0.2 °C accuracy. It is designed for outdoor and underwater environments and is waterproof (https://www.onsetcomp.com/products/hobo-data-loggers/waterproof) to 300 m (1000 ft). An optical USB (https://www.onsetcomp.com/products/data-loggers/usb-data-loggers) interface allows users to offload data. Instrument Name: Onset HOBO TidbiT v2 (UTBI-001) temperature logger Instrument Short Name:HOBO TidBit v2 Instrument Description: A temperature logger that measures temperatures over a wide temperature range. It is designed for outdoor and underwater environments and is waterproof to 300 m. A solar radiation shield is required to obtain accurate air temperature measurements in sunlight (RS1 or M-RSA Solar Radiation Shield). With an operational temperature range between -20 degrees Celsius and +70 degrees Celsius, the TidbiT v2 has an accuracy of +/-0.21 and a resolution of 0.02 degrees Celsius. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/134/