Acceptance and utilization of LTER data requires that:
(1) The Principal Investigator be sent a notice stating reasons for acquiring any data and a description of the publication intentions.
(2) The Principal Investigator of the data set be sent a copy of the report or manuscript prior to submission and be adequately cited in any resultant publications.
(3) A copy of any resultant publications should be sent to:
Marine Biological Laboratory
7 MBL St.
Woods Hole, MA 02543
|Dataset URLs:||METADATA: HTML, Rich Text, XML(EML compliant) |
DATA: Comma Delimited, Excel file with Metadata and data
|Dataset Title:||Marsh water table height, logging data from the railroad Spartina marsh site on the Parker River for April-October 2008.|
|Investigator 1:|| |
|Address line 1:||Ecosystems Center|
|Address line 2:||MBL|
|Address line 3:||7 MBL St|
|Associate Investigators:||Rebecca Prosser, Christina Maki|
|Keywords:||PIE LTER, Plum Island Ecosystems, Massachusetts, Parker River, disturbance, estuary, Spartina, water table, porewater, marsh, elevation|
|Abstract:||Measurements of water table height in the Parker River marsh located downstream of the railroad bridge. Measurements were taken every 5 minutes at each logger along a transect of water level loggers running perpendicular to the Parker River bank at the railroad site, MAR-PR-Wtable-RR, for April-October 2008.|
|Contact:||Plum Island Ecosystems LTER Information Manager
The Ecosystems Center
Marine Biological Lab
7 MBL St
Woods Hole, MA 02543
Phone (508) 289 7485
Online URL: http://ecosystems.mbl.edu/PIE/
|DATA FILE INFORMATION:|
|Data File URL||http://ecosystems.mbl.edu/PIE/data/MAR/data/MAR-PR-Wtable-RR-Apr2008.csv|
|Data File Name||MAR-PR-Wtable-RR-Apr2008|
|Number of Data Records||52200|
|Other Files to Reference||MAR-PR-Wtable-RR-Oct2008|
|Availability Status||Type 1|
|Quality Control Information|
|Maintenance Description||no new data for 2008, collection done|
|Log of Changes:||Version 01: January 30, 2012, updated data and metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 1/27/12 4:35 PM for QA/QC to EML 2.1.0|
|Version 02: June 4, 2013, data and metadata updated to comply with importation to Drupal and LTER PASTA. Research location name and description updated.Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/14/13 12:02 PM for QA/QC to EML 2.1.0|
|RESEARCH LOCATION:||MAR-PR-Wtable-RR||Site 2|
|Geographic Description||Lower Parker river, down-stream of railroad bridge, Spartina-dominated marsh edge, river kilometer is PR-12.75|
|Location Bounding Box|
|West Bounding Coordinate|
|East Bounding Coordinate|
|North Bounding Coordinate|
|South Bounding Coordinate|
|OR if single point location|
|Organisms studied||Spartina alterniflora; Spartina patens|
|Methods:||A transect of wells is established on the marsh platform, perpendicular to the marsh edge. A total of 5 wells are dug to the depth of the water table under the marsh platform. Wells 1-4 are spaced approximately evenly within the first 6m of marsh edge with well 5 approximately 20m upland from the marsh edge. A water level logger, referred to as the tide gauge, (Onset HOBO U20 series) is placed at the river bottom directly in front of the transect . Individual water level loggers (Onset HOBO U20 series) are used in each well and they measure water height in terms of absolute pressure. Barometric pressure is measured above ground with an additional Onset HOBO U20 series water level logger to tease out the atmospheric pressure from water column pressure. Prior to deployment, each water level logger is sealed in protective plastic whirl-pak bags filled with freshwater, and calibrated to known water depths. Once in the field, water height measurements, in terms of absolute pressure, are recorded every 5 minutes. Pressure readings are uploaded from the HOBO water level loggers using HOBOware software which compensates for temperature, fluid density, and barometric pressure, then are converted to absolute water height above the river bottom. Data is QA/QC'd to ensure that the loggers report the same flood water elevation on the marsh surface. The surface elevation of the marsh as measured by the marsh water level loggers must match that of the gps'd surface elevation. Any corrections made to a particular logger data field (logger # Dc (m)) are reported in the Offset corr field (Offset corr logger # (m)).|
Well Location Information:
Logger Well Height of Marsh Surface Above Creek Bottom (m) Horizontal Distance Upland of Creek Edge (m)
1 (tide gauge) 0 -9.76
2 1 2.72 0.00
3 2 3.00 1.02
4 3 3.09 2.51
5 4 3.12 4.60
6 5 3.10 19.27
Logger 1 tide gauge located on river bottom.
Marsh wells 1-5, numbered consecutively moving upland.
NOTES AND COMMENTS: Due to occasional equipment malfunction, readings are not continuous throughout the field season. Times in EST.
The tide guage shifted during the 5/29/08 to 8/29/08 deployment. Attemped to compensate shift of TG by matching high tides with loggers since all loggers match. Subtracted shift from day to day as it increased from 0.03m to 0.33m by the end of the deployment.
The lines holding loggers 2 and 5 shifted during the 8/6/08 to 10/6/08 deployment.
Due to the storage size of the 5 minute logging data, 2 files were created to accomodate the amount of data and both files must be downloaded to get a complete 2011 years worth of data for the Typha water level site.
|Variable Name||Variable Description||Units||Measurement Scale||Code Information||Number Type||DateTime Format||Missing Value Code||Missing Value Code Explanation|
|Date||Date of water height measurement (YYYY-MM-DD)||datetime||YYYY-MM-DD||NA||NA=not available|
|Time||Time of water height measurement (EST, hh:mm)||datetime||hh:mm||NA||NA=not available|
|Logger 1(tide gauge) Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 1 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|
|Logger 2 Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 2 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|
|Logger 3 Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 3 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|
|Logger 4 Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 4 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|
|Logger 5 Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 5 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|
|Logger 6 Dc (m)||Depth of water (in m) above creek bottom relative to the tide gauge||meter||ratio||real||NA||NA=not available|
|Offset corr logger 6 (m)||corrections made (in m) to match marsh surface elevation to gps elevation||meter||ratio||real||NA||NA=not available|