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:||Hach, OTT RLS measurements of water column depth at 15 minute intervals in the lower Plum Island Sound off the Ipswich Bay Yacht Club pier, Ipsiwch, MA, year 2013|
|Investigator 1:|| |
|Address line 1:||Ecosystems Center|
|Address line 2:||MBL|
|Address line 3:||7 MBLSt|
|Associate Investigators:||Hap Garritt|
|Keywords:||PIE LTER; disturbance; tide, water level, depth, Plum Island Sound, Ipswich Bay Yacht Club, Ipswich, Massachusetts|
|Abstract:||Measurements of water column depth at 15 minute intervals in Plum Island Sound at the Ipswich Bay Yacht Club, for year 2013. OTT radar level sensor (RLS) installed September 20, 2011 out of the water under the concrete pad on the Ipswich Bay Yacht Club pier, Ipswich, MA. RLS was mounted so that continuous year round measurements can be conducted without the concern of ice flows damaging the sensor.|
|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/PHY/data/MON-SO-IBYCRLS2013.csv|
|Data File Name||MON-SO-IBYCRLS2013|
|Number of Data Records||11464|
|Other Files to Reference|
|Availability Status||Type 1|
|Quality Control Information|
|Maintenance Description||Data collection ongoing until end of 2013|
|Log of Changes:||Version 01: April 17, 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|
|Version 02: April 30, 2013, data update, Used MarcrosExportEML_HTML (working)pie_excel2007.xlsm 3/14/13 12:02 PM for QA/QC to EML 2.1.0|
|RESEARCH LOCATION:||MON-SO-IBYC Data Logger Station||Site 2|
|Geographic Description||PIE YSI water quality, OTT RLS water level and wind sensor station at Ipswich Bay Yacht Club pier, Plum Island Sound, Ipswich, MA|
|Location Bounding Box|
|West Bounding Coordinate|
|East Bounding Coordinate|
|North Bounding Coordinate|
|South Bounding Coordinate|
|OR if single point location|
|Methods:||RLS water level install,IBYC, 9/20/11|
Hap Garritt, Sam Kelsey(MBL)
Nichole Halsey, RonanO’Maitu (Hach)
Used Growler boat at high tide to attach 2 x 6 pressure treated wood underneath pier platform between pilings. Wood will be used to attach the RLS. Wood attached with concrete adhesive and concrete screws.
RLS attached to wood with screws and leveled with shingle shims.
RLS cable attached to 2x4 wood which was secured along concrete. Cable attached to eye screws using cable ties.
Pier deck to sediment bottom, deck near logger down to bottom by floating dock directly downstream of logger/deck railing = 22.45 ft or 6.84 meters
RLS height above pier deck = 33 inches or 0.838 meters
IBYC NAVD88 benchmark/pier deck by datalogger = 2.78 meters, as determined by Trimble high precision GPS.
RLS to sediment bottom = 6.84 + .838 = 7.68 meters
RLS relative to NAVD88 = 3.618 meters
The OTT RLS sensor technology is based on impulse radar. Two antennas are enclosed in a compact housing and transmit pulses toward the water surface, through a Teflon face plate. The transmitting antenna transmits short radar pulses in the 24 GHz ISM band. The receiving antenna receives the pulses reflected from the water surface to determine the distance
between the face plate of the radar sensor and the water surface. The time delay from transmission to receipt is proportional to the distance between sensor and water surface. Approximately 16 individual measurements are
conducted per second and averaged after 20 seconds to minimize wave influences.
There may be sporadic instances of no data (documented in Comments field of the data) due primarily to low battery voltage over several days causing the datalogger to malfunction.
|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|
|Time||Time of sampling, 24 hr clock (eastern standard time EST)||datetime||hh:mm|
|Station||Name of sampling station||nominal|
|Record||Record number from datalogger||nominal|
|PbattvoltMin||Data logger minimum battery voltage during measurement interval||volt||ratio||real||NAN||NAN=missing value code for RLS|
|WaterLevel||Absolute water level, water surface to sediment surface||meter||ratio||real||NAN||NAN=missing value code for RLS|
|WaterLevelNAVD88||Water level relative to NAVD 88 benchmark||meter||ratio||real||NAN||NAN=missing value code for RLS|
|RadarDistance||Distance between the face plate of the radar sensor and the water surface||meter||ratio||real||NAN||NAN=missing value code for RLS|
|Comments||Comments about the data/datalogger function||nominal|