Michael N. GooseffDiane M. McKnight 2021-04-26 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/d3bd43e52cc300633fc93b98f9be9fb0 https://mcm.lternet.edu/content/daily-summarized-seasonal-measurements-discharge-water-temperature-and-specific-conductivi-0 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 daily summaries derived from 15-minute measurements of water quality and quantity parameters measured with automatic recording devices on streams in this region. Specifically, this metadata record describes the daily hydrological summaries for the McMurdo Dry Valleys' Bohner Stream at the B5 streamgage, located in the Bonney Basin of Taylor Valley. Measurements commenced during the 2011-12 austral summer and are ongoing. Gage control was constructed on 27 Jan 2011 at -77.696302 62.558285. This dataset extends through the first half of the 2022-23 field season. CodesQe - Flow estimated by averaging adjacent 15-minute intervalsQmf - Flow data Missing â flow present â either observed or suggested by water temperature and specific conductance dataQmnf - Flow data Missing â no flow - either observed or suggested by water temperature and specific conductance dataQmu - Flow data Missing or flow status unknownQno - No Flow all seasonQsed - Sediment build up on orifice line - may lead to recorded stage measurements corresponding to higher than actual discharge valuesWtx - No water temperature probe at stationWTexp - temperature probe may have been exposed to air because of low flowsSCx - No specific conductance probe at station 2011-11-29 2023-01-21 ground condition No data were collected during the 20-21 austral summer due to the COVID-19 pandemic. As needed Bohner at B5. Near Bohner at lower. Started Jan 2011. Parent Stream: Bohner Stream Provenance : Coordinates from Steve Crisp (email to Inigo San Gil) 162.558142000000 162.558142000000 -77.696332000000 -77.696332000000 LTER Core Areas disturbance None <cntperp> <cntper>McMurdo Dry Valleys LTER Information Manager</cntper> </cntperp> <cntemail>im@mcmlter.org</cntemail> Name: Anna T. Wright Role: field technician Name: Renée F. Brown Role: data manager Name: Sam Beane 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 Aquarius, 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 Aquarius. The data is pulled out of Aquarius, 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 Aquarius. All applicable shifts and datum corrections are entered into Aquarius. 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 Aquarius, 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. 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 Aquarius, 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 Aquarius. The data is pulled out of Aquarius, 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 Aquarius. All applicable shifts and datum corrections are entered into Aquarius. 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 Aquarius, 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. unknown BOHNER_HYDRO_DAILY Bohner Stream at B5 (Daily) Stream Gage ID Code representing the stream gage The data provider Code representing the stream gage Date Date on which the measurements were made The data provider calendar date/time MM/DD/YYYY gregorian calendar Average Discharge Average daily stream discharge, measured in liters per second. The data provider litersPerSecond Standard deviation for discharge Standard deviation of daily stream discharge The data provider litersPerSecond Minimum discharge Minimum daily discharge rate The data provider litersPerSecond Maximum discharge Maximum daily discharge rate. The data provider litersPerSecond Number of discharge observations Number of discharge observations per day. The data provider Number of discharge observations per day. Total daily discharge Total daily stream discharge. The data provider litersPerSecond Average temperature Average daily water temperature in celsius. The data provider celsius Standard deviation for water temperature Standard deviation of daily water temperature. The data provider celsius Minimum temperature Minimum daily water temperature. The data provider celsius Maximum temperature Maximum daily water temperature. The data provider celsius Number of temperature observations Number of daily water temperature observations. The data provider Number of daily water temperature observations. Average conductivity Mean daily specific conductivity. The data provider microsiemensPerCentimeter Standard deviation of conductivity Standard deviation of daily specific conductivity. The data provider microsiemensPerCentimeter MIN_COND MIN_COND The data provider MIN_COND Maximum conductivity Maximum daily specific conductivity. The data provider microsiemensPerCentimeter Number of conductivity observations Number of daily specific conductivity observations. The data provider Number of daily specific conductivity observations. McMurdo Dry Valleys LTER The data distributor shall not be liable for innacuracies in the content http 1 0 1 column , https://mcm.lternet.edu/sites/default/files/data/mcmlter-strm-b5_bohner-daily-20240108.csv None 2021-04-26 2021-04-26 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. Drupal Ecological information Management Systems, version D7, Biological Data Profile module