HF032
Water stable isotopes for streams samples in Mary's River Watershed, Oregon, 2014-2015

CREATOR(S): Catalina Segura, Lydia Beck Nickolas

PRINCIPAL INVESTIGATOR(S): Catalina Segura

ORIGINATOR(S): Lydia Beck Nickolas

OTHER RESEARCHER(S): J. Renée Brooks

MOST RECENT METADATA REVIEW DATE:

30 Sep 2024

KEYWORDS:

water samples, tracers, streamflow, stable isotopes, streams

PURPOSE:

The objective of this data is to characterize the isotopic signature of water in the in the Marys River Basin to investigate and model rainfall-runoff generation process at different temporal and spatial scales.

METHODS:

Experimental Design - HF032:

Description: The sampling locations in the Marys Rivers were selected to characterize the spatial variability in isotope ratios in streams draining different geologies. Samples were collected periodically at selected locations targeting streams draining a broad range of drainage areas over contrasting geologic and geomorphologic conditions.

Field Methods - HF032:

Description: Grab samples in the Marys River were collected approximately monthly at 24 locations between 2014-2015. All water samples for isotopic analysis were collected and stored in 20-mL glass bottles with conical inserts without headspace and kept in dark at relatively cool conditions (<15°C) to avoid fractionation by evaporation until their analysis was conducted at the Watershed Processes Laboratory at Oregon State University.

Laboratory Methods - HF032:

Description: The water stable isotope ratios were analyzed in the watershed processes laboratory in the College of Forestry (Oregon State University) using a cavity ring down spectroscopy liquid and vapor isotopic measurement analyzer (Picarro L2130-i, Picarro Inc, CA). Two internal standards were used to develop calibration equations, and a third standard was used to assess external accuracy. All the standards were calibrated against the IAEA primary standards for Vienna Standard Mean Ocean Water, Standard Light Antarctic Precipitation (SLAP), and Greenland Ice Sheet Precipitation.

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Hydrologic systems in the Marys River Basin, Benton County, Oregon

MEASUREMENT FREQUENCY:

monthly to irregular

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

notPlanned

CURRENTNESS REFERENCE:

Ground condition