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3 results for “tropical glacier”
Hydrochemical Data from a Tropical Andean Glacierized Catchment: δ18O, electrical conductivity, maximum fluorescence intensity, and dissolved organic carbon concentrations from short-term sampling campaigns, Ecuador (2022 and 2024)
Fluorescent dissolved organic matter (FDOM) quality, dissolved organic carbon (DOC) concentration, electrical conductivity (EC), and stable water isotopes (δ¹⁸O and δ2H) were determined in water, snow, and ice samples from a tropical glacierized catchment in the Ecuadorian Andes. The sampling locations were selected to capture the major hydrologic inputs to the main stream channel (glacial melt, tributaries, wetlands, and groundwater springs) and constrain the in-stream spatiotemporal variation in DOM quality and other hydrochemical characteristics. Two sets of high-resolution time series were collected on Oct 13, 2022 and Jun 14, 2024. Time series samples were collected at various upper catchment locations and the outlet simultaneously. DOM quality was characterized via fluorescence spectroscopy and processed using parallel factor analysis (PARAFAC). The DOM quality data are expressed as %FMax values obtained through a 4-component PARAFAC model, where %Fmax 1– 4 are interpreted as terrestrial humic-like, tyrosine-like, tryptophan-like, and microbial humic-like fluorescent components, respectively. DOC concentrations were quantified using high-temperature catalytic combustion, stable water isotopes were analyzed using laser-based spectroscopy, and EC was measured in situ with handheld multiparameter water quality probes.
New insights into the decadal variability in glacier volume of a tropical ice-cap explained by the morpho-topographic and climatic context, Antisana, (0°29' S, 78°09' W)
<p>The dataset contains five periods of surface elevation change observed on the Antisana icecap in the inner tropical region. Data were obtained by geodetic observations of aerial photographs and high-resolution satellite images for the study periods: 1956-1965, 1965-1979, 1979-1997, 1997-2009, and 2009-2016.</p>
Glacier thickness and ice volume of the inner tropical Andes
<p>Glacier thickness and ice volume of the inner tropical Andes <br> ------------------------------------------------------------</p> <p>Data folder</p> <p>This folder contains all of the velocity, thickness and basin-divided water volume described in our Scientific Data data decriptor, along with the code we used to generate the dataset.</p> <p>File structure:<br> ./Ice_velocities_individual_maps -> Contains individual ice velocity maps for each glacier in our study area (glacier velocity in metres per year)</p> <p><br> ./Ice_thicknesses_individual_maps -> Contains individual ice thickness maps for each glacier in our study area (ice thickness in m)</p> <p><br> ./Ice_thickness_stdev_individual_maps -> Contains ice thickness standard deviation maps for each glacier in our study area (standard deviation in metres)</p> <p><br> ./Basin_divided_water_eq_volumes -> Contains a map of ice equivalent water volume for each glacier basin. Three maps are provided for each glacier, for buffer distances of 1km, 5km and 20 km. Values represent cubic metres of water equivalent ice volume in a given catchment area.</p> <p><br> ./Code -> The code used to generate our results. See a separate README in that folder. Our study also used the GIV toolbox (10.5281/zenodo.4904544). All code is commented for easy re-use.</p> <p><br> Please contact Max Van Wyk de Vries (vanwy048@umn.edu) with any queries.</p>
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