A5022059903- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Hydrology and Watershed Management Studies
- Radioactive contamination and transfer
- Radioactivity and Radon Measurements
- Atmospheric and Environmental Gas Dynamics
- Plant Water Relations and Carbon Dynamics
- Geological Modeling and Analysis
- Nuclear and radioactivity studies
- Archaeology and Natural History
- Astro and Planetary Science
- Marine and coastal ecosystems
- Graphite, nuclear technology, radiation studies
- Water Quality and Resources Studies
- Water Systems and Optimization
- Flood Risk Assessment and Management
- Chemical Reactions and Isotopes
- Water Quality and Pollution Assessment
- Nuclear Physics and Applications
- Marine Biology and Environmental Chemistry
- Tree-ring climate responses
- Ocean Acidification Effects and Responses
- Flow Measurement and Analysis
- Geophysical Methods and Applications
- Geological and Geophysical Studies Worldwide
Lawrence Livermore National Laboratory
2012-2025
University of Plymouth
2008
Plymouth Marine Laboratory
2008
AB Aquatic Biology Contact the journal Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 2:67-74 (2008) - DOI: https://doi.org/10.3354/ab00037 Effects of ocean acidification on immune response blue mussel Mytilus edulis Ruth Bibby1,2, Steve Widdicombe1,*, Helen Parry1, John Spicer2, Richard Pipe3 1Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, UK 2Marine and Ecology Research Centre, University...
Abstract One of the principal questions in hydrology is how and when water leaves critical zone storage as either stream flow or evapotranspiration. We investigated subsurface selection Southern Sierra Critical Zone Observatory (California, USA) within age‐ranked framework, constrained by a novel combination cosmogenic radioactive stable isotopes: tritium, sodium‐22, sulfur‐35, oxygen‐18. found significant positive correlation between tritium rate sulfur‐35 rate, indicating that age...
Due to its short half-life (87 days), naturally occurring radio-sulfur (35S) is applicable as aqueous environmental tracer for investigating groundwater residence times shorter than one year. Being a pure β-decaying radionuclide, 35S detected straightforwardly by means of liquid scintillation counting (LSC). The rather low activities in natural waters require (i) careful sample preparation aiming at extracting 35SO42- from large-volume water samples (ca. 20 L) resulting ready LSC measurement...
Research on groundwater residence times is crucial for assessing infiltration rates and aquifer vulnerabilities, both playing a vital role in sustainable water resource management. This study aimed at advancing the use of short-lived cosmogenic radionuclide 35S (“radio-sulfur”, t1/2 = 87.4 d) determining less than one year. The results show that provides valuable tool evaluating times, rates, vulnerabilities. preconcentration 35SO42- using an anion exchange resin...
During the dry months of water year in Mediterranean climates, groundwater influx is essential to perennial streams for sustaining ecosystem health and regulating temperature. Predicted earlier peak flow due climate change may result decreased baseflow transformation intermittent streams. In this study, naturally occurring radon-222 (222Rn) was used as a tracer Martis Creek, subalpine stream near Lake Tahoe, CA. Groundwater 222Rn estimated based on measurements activity nearby deep wells...
Identifying aquifer vulnerability to climate change is of vital importance in the Sierra Nevada and other snow-dominated basins where groundwater systems are essential water supply ecosystem health. Quantifying component new (current year's) snowmelt surface useful evaluating because significant annual recharge may indicate that streamflow will respond rapidly variability precipitation, followed by more gradual decreases as declines over decades. Hydrologic models field-based studies have...
Cosmogenic sulfur-35 in water as dissolved sulfate ((35)SO4) has successfully been used an intrinsic hydrologic tracer low-SO4, high-elevation basins. Its application environmental waters containing high SO4 concentrations limited because only small amounts of can be analyzed using current liquid scintillation counting (LSC) techniques. We present a new analytical method for analyzing large BaSO4 (35)S. quantify efficiency gains when suspending precipitate Inta-Gel Plus cocktail, purify to...
The application of the cosmogenic radioisotope sulfur-35 (35S) as a chronometer near spreading basins is evaluated at two well-established Managed Aquifer Recharge (MAR) sites: Atlantis facility (South Africa) and Orange County Water District’s (OCWD’s) Kraemer Basin (Northern County, CA, USA). Source water for both these sites includes recycled wastewater. Despite lying nearer to outlet end their respective watersheds than headwaters, 35S was detected in most sampled, including from wells...
Abstract Sierra Nevada forests transpire a significant amount of California's water resources, sparking interest in applying forest management to improve supply. Determining the source evapotranspiration enables managers make informed decisions. To this end, critical zone science is develop new methods work across time scales predict subsurface storage and use. In study, vegetation accessed young switched sources depending on availability, suggesting that drought vulnerability may depend...
ABSTRACT Anthropogenic climate change leads to increased precipitation intensity and exacerbated droughts in California, challenging the reliability drought resiliency of water supply. Storing floodwater underground via managed aquifer recharge can mitigate these effects through direct infiltration or streambed infiltration. Seasonally dry streams (arroyos) already play an important part managing groundwater Livermore basin (CA). Understanding how, when where stormwater arroyo infiltrate is...
Research on groundwater residence times is essential for evaluating abstraction rates and aquifer vulnerabilities, hence, sustainable water resources management. Naturally occurring radionuclides are suitable tools related investigations. While the applicability of several long-lived investigation long-term processes has been demonstrated frequently, tracer-based approaches studying less than one year have not fully exploited. That due to rather small number applicable that show adequately...
The use of cosmogenically produced sulfur-35 (T1/2 = 87 days) and sodium-22 2.6 years) as intrinsic tracers can provide valuable information on catchment hydrology, flow paths, subsurface storage. A new straightforward method was created to determine the activities both 35S 22Na in various water sources by pumping large volumes (up 1000 L) through cation- anion-exchange resin columns field collect sodium sulfate ions simple chemistry lab. Samples are counted for using liquid scintillation...