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Oxygen and hydrogen isotopes in streams and precipitation and young water fractions across the Andes mountains and Amazon floodplain

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Created:	Aug 17, 2022 at 6:15 p.m.
Last updated:	Jul 14, 2023 at 6:10 p.m.
DOI:	10.4211/hs.c01ef51ca2b3495785d0f24c62142e23
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Abstract

This dataset includes oxygen (d18O) and hydrogen (d2H) isotope ratios in streams and precipitation across the Andes mountains and Amazon foreland floodplain in southern Perú. Samples were collected approximately twice monthly from 2015–2020. Data presented here can be used to calculate the fraction of streamflow comprised of recent precipitation (e.g., the young water fraction sensu Kirchner, 2016). These data are used in Burt et al., 2023 to understand how precipitation moves through watersheds across the geomorphic gradient of the Andes mountains and Amazon floodplain. We also provide a Matlab script that will calculate flow-weighted young water fractions and carry out a bootstrap resampling routine to generate uncertainty intervals (e.g., Figure 8 from Burt et al., 2023)

Subject Keywords

Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Cusco and Madre de Dios Provinces, Peru

North Latitude

-12.5500°

East Longitude

-69.2700°

South Latitude

-13.2000°

West Longitude

-71.6100°

Temporal

Start Date:
End Date:

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Oxygen and hydrogen isotopes in streams and precipitation and young water fractions across the Andes mountains and Amazon floodplain.
Emily I. Burt, Daxs Herson Coayla Rimachi, Adan Julian Ccahuana Quispe, A. Joshua West
Abstract: This dataset includes oxygen (d18O) and hydrogen (d2H) isotope ratios in streams and precipitation across the Andes mountains and Amazon foreland floodplain in southern Perú. Samples were collected approximately twice monthly from 2015–2020. Data presented here can be used to calculate the fraction of streamflow comprised of recent precipitation (e.g., the young water fraction sensu Kirchner, 2016). These data are used in Burt et al., 2023 to understand how precipitation moves through watersheds across the geomorphic gradient of the Andes mountains and Amazon floodplain. We also provide a Matlab script that will calculate flow-weighted young water fractions and carry out a bootstrap resampling routine to generate uncertainty intervals (e.g., Figure 8 from Burt et al., 2023)
Subject keywords: water isotopes, oxygen isotopes, hydrogen isotopes, young water fraction, transit time, travel time, hydrochemistry, critical zone, stream, river, watershed, Perú, Andes mountains, Amazon floodplain, tropical rainforest, tropical montane cloud forest
Geographic extent: samples were collected from the following watersheds.
3472-SC -13.20617 -71.61168
3077-SC -13.19255 -71.58795
2432-SC -13.15969 -71.59378
1540-SC -13.06454 -71.56038
609-SC -12.89614 -71.41826
276-SC -12.55884 -70.09931
214-SC -12.82955 -69.27132
Funding: Funding for this work came from NSF award EAR-1455352 to A. Joshua West.

Citation for associated paper: Burt, E., Coayla Rimachi, D. H., Ccahuana Quispe, A. J., and West, A. J.: Hydroclimate and bedrock permeability determine young water fractions in streamflow across the tropical Andes mountains and Amazon floodplain, Hydrol. Earth Syst. Sci., https://doi.org/10.5194/hess-2022-188, in review, 2022

Credits

Funding Agencies

This resource was created using funding from the following sources:

Agency Name	Award Title	Award Number
National Science Foundation		EAR-1455352

How to Cite

Burt, E., D. H. C. Rimachi, A. J. C. Quispe, J. West (2023). Oxygen and hydrogen isotopes in streams and precipitation and young water fractions across the Andes mountains and Amazon floodplain, HydroShare, https://doi.org/10.4211/hs.c01ef51ca2b3495785d0f24c62142e23

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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