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:
Principal Investigator
Ecosystems Center
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 ID: | MAR-PR-Wtable-T-2006.01 |
| Dataset Title: | Marsh water table height, logging data from the Typha site on the upper Parker River for April-December 2006. |
| Investigator 1: | |
| First Name: | Charles |
| Last Name: | Hopkinson |
| Address line 1: | Ecosystems Center |
| Address line 2: | MBL |
| Address line 3: | 7 MBL St |
| City: | Woods Hole |
| State: | MA |
| Zip Code: | 02543 |
| Country: | USA |
| Associate Investigators: | John Logan, Emily Gaines |
| Keywords: | water table, porewater, marsh, Parker, elevation |
| Abstract: | Readings of water table height, taken every 10 minutes, by a transect of water level loggers running perpendicular to the Parker River bank at Site T for April-December 2006. |
| Contact: | Plum Island Ecosystems LTER Information Manager The Ecosystems Center Marine Biological Lab 7 MBL St Woods Hole, MA 02543 Phone (508) 289 7485 Email: pie_im@mbl.edu Online URL: http://ecosystems.mbl.edu/PIE/ |
| DATA FILE INFORMATION: | |
| Data File URL | http://ecosystems.mbl.edu/PIE/data/MAR/data/MAR-PR-Wtable-T-2006.dat |
| Data File Name | MAR-PR-Wtable-T-2006 |
| Beginning Date | 4/27/2006 |
| End Date | 12/5/2006 |
| Number of Data Records | 31943 |
| Other Files to Reference | |
| Availability Status | Type 1 |
| Quality Control Information | |
| Maintenance Description | no new data for 2006, collection done |
| Log of Changes: | 01) 26Sep2007, new file with EML metadata level 4-5 |
| RESEARCH LOCATION: | Site 1 |
| Geographic Description | Lower Parker river, down-stream of railroad bridge, Spartina-dominated marsh edge, river kilometer is PR-21.75 |
| Location Bounding Box | |
| West Bounding Coordinate | |
| East Bounding Coordinate | |
| North Bounding Coordinate | |
| South Bounding Coordinate | |
| OR if single point location | |
| Latitude | 42.9007771166666 |
| Longitude | -70.9150511583333 |
| 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 5m 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 10 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. Well Location Information: Logger Well Height of Marsh Surface Above Creek Bottom (m) Horizontal Distance Upland of Creek Edge (m) 1 (tide gauge) 0 -9.43 2 1 2.25 -1.13 3 2 3.14 0 4 3 3.15 1.47 5 4 3.22 3.93 6 5 3.35 21.57 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. |
| Variable Name | Variable Description | Units | Measurement Scale | Code Infomation | Number Type | DateTime Format | Missing Value Code | Missing Value Code Explanation |
| Time | Date and minute of water height measurement | datetime | mm-dd-yyyy hh:mm | blank cell | ||||
| Logger 1 (tide gauge) Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Logger 2 Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Logger 3 Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Logger 4 Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Logger 5 Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Logger 6 Dc (m) | Depth of water (in m) above creek bottom relative to the tide gauge | meter | ratio | real | blank cell | |||
| Comments | Information pertaining to individual data points | nominal | blank cell |