Diana H. Wall 2014-11-12 tabular digitial data McMurdo Dry Valleys LTER McMurdo Dry Valleys LTER 10.6073/pasta/d9cc01b37bbfb66f6c8413767928ff6a https://mcm.lternet.edu/content/soil-moistures-soil-biota-distribution-experiment Investigation of the variation in soil biota and soil properties across the McMurdo Dry Valleys was part of the McMurdo Dry Valleys Long Term Ecological Research (LTER) project.  The moisture content of soil samples collected for organism extraction and identification was determined.  The study began in the austral summer of 1993/1994. Samples were taken on:    * December 31, 1993  * January 3, 8, 10 and 13, 1994,  * December 12 and 22, 1994,  * January 6 and 9, 1995,  * November 1, 8, 16 and 27, 1995,  * December 5 and 7, 1995, and  * January 12, 1998.   1993-12-31 1998-12-31 ground condition in 2016, this dataset was packaged and completed to meet best practices for preservation (San Gil: Added geo-metadata, personnel.  Prepared in ISO, EML)  This file was created by Mark St. John at Colorado State University in Oct-1998, using raw data from the Excel workbooks '9312gsso.raw', '9412gsso.raw', '9511gsso.raw', and '9801gsso.raw'. The file format was suggested by the LTER data manager, to conform with the relational database structure. On 30-Oct-1998, the file was submitted to Denise Steigerwald, the MCM LTER data manager, located at INSTAAR, University of Colorado.                        Upon arrival at INSTAAR, the data manager combined the 4 data files, removed columns for latitude and longitude, and updated the location names to match those provided in the "soil measurement locations" file (from which latitude and longitude can be found). The resulting file was reformatted to present in ascii, comma delimited text and MS-DOS text (table layout) on the MCM LTER web site. Both of these files are linked to this web page above.                        On 28-Oct-1998, Andy Parsons discovered an error in the documentation of the storage temperature used for the soil samples collected. He informed the data manager of this error, resulting in an update from -8C to +5C in the methods portion of the page above.                        On 10-Nov-1998 Denise Steigerwald discovered a typo in the date shown for Cape Royds records represented in the 9312gsso file. Information colleced on 31-Dec-1993 showed a date of 31-Dec-1994. Denise revised these records in the Access database as well as the comma delimited text and MS-DOS text files on the web.  As needed Located in middle of Beacon Valley. Ceased ops in 2012ID: BENM 160.656900000000 160.656900000000 -77.828000000000 -77.828000000000 1 176m 1 176m meter Moss Sample 130 @ Cape Crozier 169.200103759766 169.200103759766 -77.456802368164 -77.456802368164 The Cape Royds Pond 1 is an ice free pond in the Ross IslandCode : CR1Area: 1,792 Temperature: 6.3 celsius  166.163772583008 166.163772583008 -77.552818298340 -77.552818298340 Garwood Ice Cliff Meteorological Station, it was temporarily located in the Miers Valley,   164.131500000000 164.131500000000 -78.025900000000 -78.025900000000 51m 51m meter The Labyrinth Pond 4 is located in the Wright Valley. Ice-covered, heavily shaded, lense-shaped.Code: LAB4Area: 25,805Temperature: 2.6 celsius  161.063613891602 161.063613891602 -77.560478210449 -77.560478210449 Lake Bonney is a saline lake with permanent ice cover at the western end of Taylor Valley in the McMurdo Dry Valleys of Victoria Land, Antarctica. It is 7 kilometres or 4.3 mi long and up to 900 metres or 3,000 ft wide. A narrow channel only 50 metres or 160 ft wide. Lake Bonney at Narrows separates the lake into East Lake Bonney 3.32 square kilometres or 1.28 sq mi and West Lake Bonney, 0.99 square kilometres or 0.38 sq mi. The west lobe is flanked by Taylor glacier. Valley: Taylor Distance to Sea : 25 Maximum Length (km): 4.8 Maximum Width (km): 0.9 Maximum Depth (m): 37 Surface Area (km^2): 3.32 Ice Thickness Average Surface (m): 3 - 4.5 Volume (m^3 * 10^6): 54.7 162.536209106445 162.353210449219 -77.697700500488 -77.724441528320 57m 57m meter This channel connects the east and west lobes of Lake Bonney. Valley: Taylor Maximum Width (km): 0.05 Maximum Depth (m): 13 162.354003906250 162.354003906250 -77.715599060059 -77.715599060059 57m 57m meter Lake Bonney is a saline lake with permanent ice cover at the western end of Taylor Valley in the McMurdo Dry Valleys of Victoria Land, Antarctica. It is 7 kilometres or 4.3 mi long and up to 900 metres or 3,000 ft wide. A narrow channel only 50 metres or 160 ft wide. Lake Bonney at Narrows separates the lake into East Lake Bonney 3.32 square kilometres or 1.28 sq mi and West Lake Bonney, 0.99 square kilometres or 0.38 sq mi. Valley: Taylor Distance to Sea : 28 Maximum Length (km): 2.6 Maximum Width (km): 0.9 Maximum Depth (m): 40 Surface Area (km^2): 0.99 Ice Thickness Average Surface (m): 2.8-4.5 Volume (m^3 * 10^6): 10.1 162.354934692383 162.269104003906 -77.714805603027 -77.727287292480 57m 57m meter Lake Chad is in the Lake Hoare basin, Taylor Valley, west of Lake Hoare and east of the Suess Glacier. Wharton, House and McKay streams flow from the Suess Glacier directly into Lake Chad and then the overflow from Lake Chad flows into Lake Hoare. Valley: Taylor Distance to Sea : 24 Maximum Length (km): 1 Maximum Width (km): 0.2 Maximum Depth (m): 5.5 Surface Area (km^2): 0.15 Ice Thickness Average Surface (m): 3.5 - 4.5 162.785705566406 162.745544433594 -77.640029907227 -77.644386291504 The Lake Fryxell basin is formed by a moraine depression in a wider portion of the Taylor Valley. It has a number of moraine islands and shallower areas, as well as several relatively well developed deltas. The lake is fed by at least 10 meltwater streams with a total drainage catchment of 230 km2. The lake is dammed to the southwest by the Canada Glacier and is topographically closed. It is perennially ice covered; during summer months, an ice-free moat generally forms around much of the lake margin. Lake levels have risen ~2 m between 1971 and 1996. There are no surface outflows; the only known water loss is through ice ablation (evaporation, sublimation and physical scouring). Valley: Taylor Distance to Sea : 9 Maximum Length (km): 5.8 Maximum Width (km): 2.1 Maximum Depth (m): 20 Surface Area (km^2): 7.08 Ice Thickness Average Surface (m): 3.3 - 4.5 Volume (m^3 * 10^6): 25.2 163.259582519531 163.048782348633 -77.597076416016 -77.622711181641 18m 18m meter Lake Hoare occupies a narrower portion of the Taylor Valley, dammed by the Canada Glacier. It would drain almost completely without this dam. There are a number of islands which may be related to an old terminal of Canada Glacier. The lake is fed primarily from direct runoff from the glacier, as well as meltwater streams. (Lake level rose ~1.5 m between 1972 and 1996). There are no surface outflows; the only known water loss is through ice ablation (evaporation, sublimation and physical scouring). Valley: Taylor Distance to Sea : 15 Maximum Length (km): 4.2 Maximum Width (km): 1 Maximum Depth (m): 34 Surface Area (km^2): 1.94 Ice Thickness Average Surface (m): 3.1 - 5.5 Volume (m^3 * 10^6): 17.5 162.935836791992 162.784423828125 -77.623085021973 -77.639259338379 73m 73m meter Lake Vanda is located in the Wright Valley, adjacent to the Taylor Valley. It is fed primarily by the Onyx River, which has its origin at Lake Brownworth, and ultimately at the Lower Wright Glacier located ~27 km east of the lake. The lake has no outflow. Valley: Wright Distance to Sea : 47 Maximum Length (km): 8 Maximum Width (km): 2 Maximum Depth (m): 75 Surface Area (km^2): 5.2 Ice Thickness Average Surface (m): 2.8 - 4.2 Volume (m^3 * 10^6): 160 161.691970825195 161.391906738281 -77.518882751465 -77.542304992676 143m 143m meter Lake Vida is a hypersaline lake in Victoria Valley, the northernmost of the large McMurdo Dry Valleys, on the continent of Antarctica. It is isolated under year-round ice cover, and is considerably more saline than seawater. Lake Vida is one of the largest lakes in the McMurdo Dry Valley region and is a closed-basin endorheic lake. The permanent surface ice on the lake is the thickest non-glacial ice on earth, reaching a depth of at least 21 metres or 69 ft. The ice at depth is saturated with brine that is seven times as saline as seawater. The high salinity allows the brine to remain liquid at an average yearly water temperature of 13 degrees Celsius or 9 farenheit. Hydrology: Lake Vida has at least three named inflows: Victoria River, Kite Stream, and Dune Creek. Victoria River passes through the Vida Basin into Victoria Valley, Victoria Land as ephemeral glacial meltwater from the Upper Victoria Glacier, draining from Victoria Upper Lake. Geology: In the vicinity of Lake Vida, a variety of geological features are noted, the most significant being glaciers, lakes, valleys, ridges, and summits. There are approximately 25 named glaciers within a 25 kilometres radius with the nearest being Upper Victoria Glacier, Packard Glacier, Clark Glacier, and Clio Glacier. Valley: Victoria 161.930999755859 161.930999755859 -77.388298034668 -77.388298034668 349m 349m meter The Nussbaum Riegel Pond is in the Taylor Valley in between the Bonney and Chad Basins.  An Ice-covered, oval pond.Code: NRP Area: 6,133 Temperature: 3.1 celsius 162.814727783203 162.814727783203 -77.684379577637 -77.684379577637 LTER Core Areas population dynamics None <cntorg>McMurdo Dry Valleys LTER</cntorg> <onlink>http://mcmlter.org/</onlink> <span property="dc:title" content="McMurdo Dry Valleys LTER" class="rdf-meta element-hidden"></span> Name: Ross A. Virginia Role: associated researcher Name: Andy Parsons Role: field crew Name: Denise Steigerwald Role: data manager Name: Inigo San Gil Role: data manager Not Applicable Not Applicable Field and/or Lab Methods   At each site 5-25 soil samples were taken for organism enumeration and moisture content analysis as follows:  Sampling bags were prepared with one sterile 'Whirlpak' bag and clean plastic scoop per sample.  The location of the sampling was recorded each year so that areas were not re-sampled.  Using the plastic scoop, soil was collected to a 10 cm depth.  Very large rocks (&gt;20 mm diameter) were excluded from the sample.  The soil was shoveled into the 'Whirlpak' bag until three quarters full (about 1.5 kg soil).  The soil was mixed well in the bag, then the bag was closed tightly, expelling as much air as possible.  The soil samples were stored in a cooler for transportation.  On return to the laboratory (within 8 hours of sampling), the soils were stored at +5 degrees C until further processing.     In the laboratory, soil samples were handled in a laminar flow hood to prevent contamination.  The Whirlpak bags of soil were mixed thoroughly prior to opening. Approximately 200cm3 of soil was placed in a pre-weighed 800mL plastic beaker. Rocks greater than 3-4mm in diameter were removed from the sample.  A sub-sample of approximately 50g was removed and placed in a pre-weighed aluminum dish, and weighed on a balance accurate to 0.01g.  This sample was dried at 105 degrees C for 24 hours.  The sample was removed, placed in a desiccator to cool down, and re-weighed.  These data were used to calculate water content of the soil and to express data as numbers of soil organisms per unit dry weight of soil.       At each site 5-25 soil samples were taken for organism enumeration and moisture content analysis as follows:  Sampling bags were prepared with one sterile 'Whirlpak' bag and clean plastic scoop per sample.  The location of the sampling was recorded each year so that areas were not re-sampled.  Using the plastic scoop, soil was collected to a 10 cm depth.  Very large rocks (>20 mm diameter) were excluded from the sample.  The soil was shoveled into the 'Whirlpak' bag until three quarters full (about 1.5 kg soil).  The soil was mixed well in the bag, then the bag was closed tightly, expelling as much air as possible.  The soil samples were stored in a cooler fortransportation.  On return to the laboratory (within 8 hours of sampling), the soils were stored at +5 degrees C until further processing.   In the laboratory, soil samples were handled in a laminar flow hood to prevent contamination.  The Whirlpak bags of soil were mixed thoroughly prior to opening. Approximately 200cm3 of soil was placed in a pre-weighed 800mL plastic beaker. Rocks greater than 3-4mm in diameter were removed from the sample.  A sub-sample of approximately 50g was removed and placed in a pre-weighed aluminum dish, and weighed on a balance accurate to 0.01g.  This sample was dried at 105 degrees C for 24 hours.  The sample was removed, placed in a desiccator to cool down, and re-weighed.  These data were used to calculate water content of the soil and to express data as numbers of soil organisms per unit dry weight of soil.    unknown gsso LOCATION Name of area where measurement was made The data provider Name of area where measurement was made DATE_TIME Date on which sample was gathered The data provider calendar date/time mm/dd/yyyy gregorian calendar SAMPLE # Sample ID The data provider Sample ID SOIL WATER CONTENT (%) Percent water found in soil The data provider 0 100 dimensionless 0.0001 COMMENTS Helpful hints about the sample The data provider Helpful hints about the sample FILE NAME Name of file in which data was stored The data provider Name of file in which data was stored 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/gsso.csv None 2014-11-12 2014-11-12 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