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| Created: | Feb 23, 2024 at 5:50 p.m. | |
| Last updated: | Mar 07, 2024 at 10:42 p.m. | |
| Citation: | See how to cite this resource | |
| Content types: | Geographic Feature Content |
| Sharing Status: | Public |
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Abstract
Isotope samples were taken at 32 groundwater wells across the Jack and Laura Dangermond preserve. Well water was pumped from wells until electrical conductivity and temperature stabilized, then water was collected and labeled in HDPE sample bottles (after filtration for carbon isotope samples). Stream isotope samples were collected at Escondido Stream either by a grab sample or by an isco 6700 sampler. The isco sampling device is contained in a metal box and the bottles were filled with 2 mm of mineral oil to limit evaporation from occurring before the samples were collected. Isco samples were collected at least every 24 days. Rainfall samples were either collected as a grab sample or with the automated rainfall sampler. The automated rainfall sampler is engineered with a rachio irrigation system and an array of 16 solenoid valves which drain into a different sealed 5 gallon bucket each day. Hydrogen and oxygen isotope analysis was completed at the UC Davis Stable Isotope Facility https://stableisotopefacility.ucdavis.edu/analytical-services. Tritium analysis was completed by the USGS Isotope Tracer Project https://water.usgs.gov/nrp/isotope-tracers/index.html. Carbon isotope analysis was completed by the University of Arizona AMS laboratory https://ams.arizona.edu/. Stream temperature and specific conductivity (measured via an in-situ aqua troll 600) were recorded at varying intervals with the goal of capturing at least 1 data point per hour from November 2020 - May 2023; there is a gap between March 2021 and October 2021. The In-situ aqua troll 600 is located in Escondido stream at Jalama road at the entrance of a culvert. The data available here are the result of collective efforts from many members of this laboratory over multiple years. This material is based on work supported by the National Science Foundation under grant no. EAR-2048227. This research was supported by funding from the Zegar Family Foundation. S.J. acknowledges the Jack and Laura Dangermond Preserve (https://doi.org/10.25497/D7159W), the Point Conception Institute and the Nature Conservancy for their support of this research.
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readme.txt
Isotope samples where taken at 32 sites across the Jack and Laura Dangermond preserve. Well water was pumped until Electoconductivity and temperature were stabalized, then water was collected and labeled in HDPE sample bottles. Hydrogen and Oxygen isotope analysis was completed at the UC Davis Stable isotope facility https://stableisotopefacility.ucdavis.edu/analytical-services. Tritium analysis was completed by the USGS Isotope Tracer Project https://water.usgs.gov/nrp/isotope-tracers/index.html. Carbon isotope analysis was completed by the University of Arizona AMS laboratory https://ams.arizona.edu/.
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Funding Agencies
This resource was created using funding from the following sources:
| Agency Name | Award Title | Award Number |
|---|---|---|
| Zegar Family Foundation | ||
| National Science Foundation | How streamflow ages vary downstream along river courses | EAR-2048227 |
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People or Organizations that contributed technically, materially, financially, or provided general support for the creation of the resource's content but are not considered authors.
| Name | Organization | Address | Phone | Author Identifiers |
|---|---|---|---|---|
| The Nature Conservancy - CA | The Nature Conservancy - CA | CA, US |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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