Diane M. McKnightMichael N. Gooseff 2015-01-17 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/24d1067d9ca1c89813026e4653a38633 https://mcm.lternet.edu/content/seasonal-high-frequency-measurements-discharge-water-temperature-and-specific-conductivit-17 As part of the Long Term Ecological Research (LTER) project in the McMurdo Dry Valleys of Antarctica, a systematic sampling program has been undertaken to monitor the glacial meltwater streams in that region. This package contains data pertaining to continuous monitored water quality and quantity parameters measured with automatic recording devices on streams in this region. Specifically, this metadata record describes the hydrology dataset for the McMurdo Dry Valleys' House Stream at the H2 streamgage, located in the Hoare Basin of Taylor Valley. Measurements commenced during the 1993-94 austral summer and continued through the end of the 2011-12 austral summer. The H2 streamgage was removed in December 2012 due to rising lake levels. 1993-11-21 2012-01-24 ground condition 20220606: Several enhancements were made to the metadata to better align with internal data management best practices and reflect updated licensing. The dataset was also updated to remove the long-form header, but no changes were made to the data. As needed House Stream at H2Description: USGS site 10; coordinates taken from 1996-97 GPS measurements at center of weirID: house_h2Provenance File Name :GPS96-97.DOC 162.741317749023 162.741317749023 -77.642982482910 -77.642982482910 81m 81m meter LTER Core Areas disturbance None <cntperp> <cntper>McMurdo Dry Valleys LTER Information Manager</cntper> </cntperp> <cntemail>im@mcmlter.org</cntemail> Name: Renée F. Brown Role: data manager Name: Chris Jaros Role: former field crew Not Applicable Not Applicable Field and/or Lab Methods Campbell CR10 dataloggers were used to record stream stage, water temperature, and conductivity in a network of stream gages. Stage is monitored with pressure transducers; PSS-1 and PS-2 models form Paroscientific Corporation, and Accubars from Sutron Corporation. The pressure transducers measure the backpressure in orifice lines set into or above controls in the stream channel. In addition, some of the sites monitor water temperature and conductivity with either USGS minimonitor probes, or Campbell temperature/conductivity probes. Ratings are developed for the stage/discharge relationship at each site by measuring streamflow with current meters or portable flumes, according to standard USGS methods. Datum corrections to the stage are determined by periodically surveying the elevation of the orifice line to the control and nearby reference marks. Calibrations for the temperature and conductivity are assessed by measuring these parameters with portable field meters while simultaneously noting the readings from the gage probes. Data is downloaded into Campbell storage modules, and retrieved into pcs. From there, the data is sent to a USGS computer, where time discrepancies are resolved, and the data is loaded into ADAPS, a database system developed in the USGS for maintaining and processing water data. A determination for each site as to when the stream was flowing and when it was not is made. For water temperature and conductivity, bad data is deleted. Variable shifts are determined based on field calibration measurements, and other indicators. The shifts are applied to the remaining good data inside of ADAPS. The data is pulled out of ADAPS, and reformatted for input into ORACLE. Cases of water temperature below reasonable values are set to lower limits. A quality code is assigned to every value. The resulting data is uploaded into the ORACLE and the McMurdo database. For stage/discharge, bad data is deleted. Survey data is reviewed to compute weir elevations and datum corrections. A rating curve is developed graphically, based on available data, and entered into ADAPS. All applicable shifts and datum corrections are entered into ADAPS. All corrections and ratings are run against the good stage data to compute the discharge at each recording interval . The data is pulled out of ADAPS, and reformatted for input into ORACLE. A quality code is assigned to every value. The resulting data is uploaded into ORACLE and the McMurdo database. ADAPS was deprecated in 2012 in favor of the software Aquarius. Campbell CR10 dataloggers were used to record stream stage, water temperature, and conductivity in a network of stream gages. Stage is monitored with pressure transducers; PSS-1 and PS-2 models form Paroscientific Corporation, and Accubars from Sutron Corporation. The pressure transducers measure the backpressure in orifice lines set into or above controls in the stream channel. In addition, some of the sites monitor water temperature and conductivity with either USGS minimonitor probes, or Campbell temperature/conductivity probes. Ratings are developed for the stage/discharge relationship at each site by measuring streamflow with current meters or portable flumes, according to standard USGS methods. Datum corrections to the stage are determined by periodically surveying the elevation of the orifice line to the control and nearby reference marks. Calibrations for the temperature and conductivity are assessed by measuring these parameters with portable field meters while simultaneously noting the readings from the gage probes. Data is downloaded into Campbell storage modules, and retrieved into pcs. From there, the data is sent to a USGS computer, where time discrepancies are resolved, and the data is loaded into ADAPS, a database system developed in the USGS for maintaining and processing water data. A determination for each site as to when the stream was flowing and when it was not is made. For water temperature and conductivity, bad data is deleted. Variable shifts are determined based on field calibration measurements, and other indicators. The shifts are applied to the remaining good data inside of ADAPS. The data is pulled out of ADAPS, and reformatted for input into ORACLE. Cases of water temperature below reasonable values are set to lower limits. A quality code is assigned to every value. The resulting data is uploaded into the ORACLE and the McMurdo database. For stage/discharge, bad data is deleted. Survey data is reviewed to compute weir elevations and datum corrections. A rating curve is developed graphically, based on available data, and entered into ADAPS. All applicable shifts and datum corrections are entered into ADAPS. All corrections and ratings are run against the good stage data to compute the discharge at each recording interval . The data is pulled out of ADAPS, and reformatted for input into ORACLE. A quality code is assigned to every value. The resulting data is uploaded into ORACLE and the McMurdo database. ADAPS was deprecated in 2012 in favor of the software Aquarius. unknown HOUSE_HYDRO House Stream at H2 Dataset code Code representing discrete stream gage measurements dataset The data provider Code representing discrete stream gage measurements dataset stream gage id Code representing stream gage The data provider Code representing stream gage Date/time Date/time of sample (McMurdo time) The data provider calendar date/time MM/DD/YYYY HH24:MI gregorian calendar Discharge Rate Stream discharge The data provider litersPerSecond 0.01 Discharge Quality Estimated accuracy of discharge (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) The data provider Estimated accuracy of discharge (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) Water Temperature Water Temperature The data provider celsius 0.1 Water Temperature Quality Estimated accuracy of water temperature (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) The data provider Estimated accuracy of water temperature (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) Conductivity Specific conductivity The data provider microsiemens/cm 0.1 Conductivity Quality Estimated accuracy of conductivity (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) The data provider Estimated accuracy of conductivity (good=most accurate within 10%, fair=most data accurate within 25%, poor=significant amounts of data may be >25% off) Comments Comments about the overall data The data provider Comments about the overall data McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 \n 1 column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-strm-h2_house-15min-20220606_0.csv None 2015-01-17 2015-01-17 McMurdo Dry Valleys LTER http://mcmlter.org/ Biological Data Profile of the Content Standards for Digital Geospatial Metadata devised by the Federal Geographic Data Committee. 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