Plum Island Ecosystems LTER Database

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:MON-PR-MBWatLevel2008.01
Dataset Title:Measurements of water column depth at 15 minute intervals in the upper Parker River Estuary at Middle Bridge, year 2008. Water depths are relative to the sonde pressure transducer and not associated with a datum.
Investigator 1: 
First Name:Joe
Last Name:Vallino
Address line 1:Ecosystems Center
Address line 2:MBL
Address line 3:7 MBLSt
City:Woods Hole
State:MA
Zip Code:02543
Country:USA
Associate Investigators:Hap Garritt
Keywords:PIE LTER, disturbance, Plum Island Ecosystems, Massachusetts, sea level, tide, water level, depth, Parker River, monitoring
Abstract:Measurements of water column depth at 15 minute intervals in the upper Parker River Estuary at Middle Bridge, year 2008. Water depths are relative to the sonde pressure transducer and not associated with a datum.
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/PHY/data/MON-PR-MBWatLevel2008.csv
Data File Name MON-PR-MBWatLevel2008
Beginning Date 4/1/2008
End Date 12/2/2008
Number of Data Records 16181
Other Files to Reference
Availability Status Type 1
Quality Control Information
Maintenance Description
Log of Changes: Version 01: March 5, 2012, updated data and metadata. Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 28/12 8:18 PM for QA/QC to EML 2.1.0
 
RESEARCH LOCATION: MON-PR-Middle Bridge WQ Site 2
Geographic Description Middle Road Bridge (Thurlow's Bridge, Byfield, Massachusetts)  
Location Bounding Box    
West Bounding Coordinate    
East Bounding Coordinate    
North Bounding Coordinate    
South Bounding Coordinate    
OR if single point location    
Latitude 42.758904  
Longitude -70.900941  
Elevation    
     
     
 
TAXONOMIC COVERAGE:
Taxonomic Protocols
Organisms studied
 
Methods:Measurements are made using a YSI 6600 water quality sonde. YSI Sonde water level sensor consists of a mix of vented and n
on-vented level depth sensor (stainless steel strain gauge).

Depth values needed corrections factors applied due to changing of sonde types (6600 to 600XLM) due to cable sonde leakage. The 600 XLM did not have a vented cable so pressure/depth readings needed a post deployment correction to account for changes in ambient atmospheric pressure. Marshview Farm (MFM) weather station 15 minute barometric pressure data was used to compute correction factor at the same time intervals as the 600 XLM time intervals.
Ambient pressure changes correspond to the following water level chnages, 1 mb = 0.0102 meters of water.

Correction factor calculations for Middle Rd
Calib Depth=0 meters (Air)
Calib ATM (mB)

Date
0

1013

6/3/2008
0.051

1018

7/25/2008
0.0714

1020

8/28/2008
0.1938

1032

9/23/2008
-0.0102

1012

10/21/2008
0.0306

1016

11/18/2008

Using the table above and measured data for the corresponding time intervals
Corrected depth = (Measured depth + Calib Depth) - ((BAR-Calib ATM) x 0.0102)

Data Table

Variable Name Variable Description Units Measurement Scale Code Information Number Type DateTime Format Missing Value Code Missing Value Code Explanation
Date Date of sampling   datetime     dd-mmm-yyyy   blank cell
Time Time of sampling (eastern standard time EST)   datetime     hh:mm:ss   blank cell
Station Name of sampling station   nominal         blank cell
Measured Depth Water column depth above non vented sonde pressure transducer meter ratio   real     blank cell
Corrected Depth Water column depth above non vented sonde pressure transducer, correction factor applied for ambient atmospheric pressure changes meter ratio   real     blank cell
BAR barometer from Marshview Farm (MFM) weather station (mbar) millibar ratio   real     blank cell
Comments Comments about specific data   nominal         blank cell