uid=BNZ,o=lter,dc=ecoinformatics,dc=org all public read knb-lter-bnz.147.10 Jonathan A. O'Donnell Reseach Hydrologist

3215 Marine St. Suite E-127 Boulder CO 80303 United States

303-541-3097 303-541-3084 jodonnell@usgs.gov Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu Jeremy Jones Assistant Professor of Biology

Institute of Arctic Biology; Department of Biology and Wildlife; University of Alaska Fairbanks Fairbanks AK 99775 Unites States

(907) 474-7972 (907) 474-6967 Associated investigator 2006-01-01 Groundwater was sample from wells in the riparian zone of a high permafrost (C3) and low permafrost watershed (C2) in Caribou-Poker Creeks Research Watershed in interior Alaska. Each sample was measured for a suite of solutes (anions, cations, dissolved organic carbon, total dissolved nitrogen, conductivity, pH). To analyze spatial and temporal patterns of solutes in riparian groundwater and to determine calculate groundwater inputs to stream chemistry. dissolved organic carbon water chemistry watersheds ammonium groundwater Biogeochemistry

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http://www.lter.uaf.edu/data_detail.cfm?datafile_pkey=147 Site information unavailable -147.603928 -147.5713145 65.15876438 65.14329713 2003-05-01 2003-08-31

Completed

Bonanza Creek LTER Data Manager

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 jpdowning@alaska.edu http://www.lter.uaf.edu Bonanza Creek LTER

Boreal Ecology Cooperative Research Unit University of Alaska Fairbanks P.O. Box 756780 Fairbanks AK 99775 USA

907-474-6364 907-474-6251 Bonanza Creek LTER

Groundwater wells were installed in each catchment in April 2003 in transects (n = 6) that extended laterally from the stream-riparian interface to the riparian-upland boundary. Transects consisted of four wells each. The first three wells were installed at distances from the steam channel of 1, 5 and 10 m. The last well was installed at the edge of the valley bottom adjacent to the hill slope at distances from 15 to 30 m depending on the valley bottom width. Transects spanned a 300 m reach of stream in both catchments. Wells were constructed of PVC pipe (1.25 cm ID) that were installed to a depth of 1 m; wells were perforated with 3 mm holes spaced every 5 cm from 10 to 95 cm below the soil surface. Stream and groundwater samples were collected every two weeks in 2003 from May 22 to August 11. Groundwater samples were stored at 4ºC until analysis (within 48 hours of sampling).

Field methods: Stream and groundwater samples were collected every two weeks in 2003 from May 22 to August 11. Groundwater samples were stored at 4ºC until analysis (within 48 hours of sampling). Additionally, thaw depth was measured in conjunction with collection of groundwater samples at each well location by inserting a graduated stainless-steel depth probe into the soil until permafrost was contacted (thaw depth was also measured in 2004). Lab methods: For groundwater samples, cations (Ca2+, K+, Mg2+, Na+, NH4+) and anions (Cl-, NO2-, NO3-, PO43-, SO42-) were analysed on a Dionex DX-320 Ion Chromatograph (Dionex Corporation, Sunnvale, CA, USA). Soil extractions were only analysed for anions. DOC and total dissolved nitrogen (TDN) were determined using a Shimadzu TOC-5000 analyser (Shimadzu Scientific Instruments, Columbia, MD, USA) plumbed to an Antek 7050 nitric oxide chemoluminescent detector (Antek Electronic Ltd. Co., Houston, TX, USA). Conductivity was measured on groundwater samples using a conductivity meter. Instrumentation used: Dionex DX-320 Ion Chromatograph Shimadzu TOC-5000 analyser plumbed to an Antek 7050 nitric oxide

geoReference 2003-05-01 2003-08-31

every 2 weeks

groundwater_chemistry_CPCRW_2003.txt groundwater_chemistry_CPCRW_2003.txt 1 \n \n column \t http://metacat.lternet.edu/das/dataAccessServlet?docid=knb-lter-bnz..&urlTail=/ascii/files/groundwater_chemistry_CPCRW_2003.txt Date Date Sample date for each measurement string dd/mm/yy -999 Missing Value Watershed Watershed Watershed site name string Watershed site name Distance Distance Distance of groundwater well for stream integer meter real Fluoride Fluoride fluoride concentration in groundwater float fluoride concentration in groundwater -999 Missing Value Acetate Acetate acetate concentration in groundwater float acetate concentration in groundwater -999 Missing Value Formate Formate formate concentration in groundwater float µM real -999 Missing Value Chloride Chloride chloride concentration in groundwater float µM real -999 Missing Value Nitrite Nitrite nitrite concentration in groundwater float µM real -999 Missing Value Bromide Bromide Bromide concentration in groundwater float µM real -999 Missing Value Nitrate Nitrate nitrate concentration in groundwater float µM real -999 Missing Value Sulfate Sulfate sulfate concentration in groundwater float µM real -999 Missing Value Phosphate Phosphate phosphate concentration in groundwater float µM real -999 Missing Value DOC DOC dissolved organic carbon (DOC) concentration in groundwater float µM real -999 Missing Value Sodium Sodium sodium concentration in groundwater float µM real -999 Missing Value Ammonium Ammonium ammonium concentration in groundwater float µM real -999 Missing Value Magnesium Magnesium magnesium concentration in groundwater float µM real -999 Missing Value Potassium Potassium potassium concentration in groundwater float µM real -999 Missing Value Calcium Calcium calcium concentration in groundwater float µM real -999 Missing Value Thaw Depth Thaw Depth depth of unfrozen soil within the active layer float centimeter real -999 Missing Value