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Hydrological control of chemical weathering and rock-carbon fluxes: East River, Colorado

Creators: Jiamin Wan, Tetsu TokunagaORCID, Curtis BeutlerORCID, Alexander Newman, Wenming DongORCID, Markus BillORCID, Wendy Brown, Amanda Henderson, Anh Tran, Kenneth Williams
Year: 2024
DOI: 10.15485/2322567
License: CC-BY 4.0
Location: The East River (ER) is a snow‐dominated, headwater basin of the Upper Colorado River Basin (UCRB) located in the western United States. The ER is the designated testbed of Lawrence Berkeley National Laboratory's Watershed Function Scientific Focus Area (WFSFA). Through WFSFA, observational networks have been established to measure stream discharge and precipitation chemistry. The ER is considered representative of many snow‐dominated headwaters of the Rocky Mountains. The study domain encompasses nearly 85 square km, a 1.4‐km vertical drop in elevation (4,120 to 2,760 m) and pristine alpine, subalpine, montane, and riparian ecosystems. The ER contains high‐energy mountain streams to low‐energy meandering floodplains and is eroding primarily into the Cretaceous, carbon‐rich, marine shale of the Mancos Formation. Additional metadata on specific locations within the watershed are provided in the following related data package: Varadharajan C. et al. (2022) doi:10.15485/1660962
Temporal extent: 2016-10-01 to 2021-10-01
Bounding box: 38.880°N to 39.034°N, -107.050°W to -106.880°W
Publisher: ESS_DIVE
Tags: weathering rates, water fluxes, CO2 fluxes, ESS-DIVE File Level Metadata Reporting Format, ESS-DIVE CSV File Formatting Guidelines Reporting Format, CATEGORICAL:NONE Groundwater Flux, Groundwater Level, sensor depth, Anions, Cations, Isotopes, Mineralogy, Patriculate/Dissolved Inorganic Carbon, Patriculate/Dissolved Organic Carbon, Total Inorganic Carbon, Total Organic Carbon, Alpine & Subalpine Ecology, Hydrology & Watersheds, Snow & Ice, Groundwater, Geology & Tectonics, Soil Science, Weather & Atmospheric Science, Field Methods & Monitoring, Gunnison Basin, Research Programs

Description

This data package is used in the manuscript entitled “Hydrological control of chemical weathering and rock-carbon fluxes”. The field study was conducted in a lower montane hillslope of the East River watershed, underlain by Mancos Shale, within the lower 140 m section of a transect that extends nearly 1 km to its local peak. The data in this package, in CSV file format, were collected from Fall 2016 to fall 2021, including depth-resolved dynamic water table depths, subsurface water fluxes, solid phase (soil to bedrock) chemical compositions, geochemical properties of porewater and pore-gas, including radio carbon concentrations. The detailed methods of field studies, laboratory chemical analyses, and calculations are described in the Methods section and in the dataset file: Wan_et_al_Methods.pdf. The dataset additionally includes a file-level metadata (flmd.csv) file that lists each file contained in the dataset with associated metadata; and a data dictionary (dd.csv) file that contains column/row headers used throughout the files along with a definition, units, and data type.

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