Sarah Tweed

ORCID: 0000-0002-0476-9023
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About
Contact & Profiles
Research Areas
  • Groundwater and Isotope Geochemistry
  • Groundwater and Watershed Analysis
  • Hydrology and Watershed Management Studies
  • Groundwater flow and contamination studies
  • Flood Risk Assessment and Management
  • Geophysics and Gravity Measurements
  • Karst Systems and Hydrogeology
  • Water management and technologies
  • Geophysical and Geoelectrical Methods
  • Soil erosion and sediment transport
  • Geological and Geophysical Studies Worldwide
  • Methane Hydrates and Related Phenomena
  • Geophysical Methods and Applications
  • GNSS positioning and interference
  • Solar and Space Plasma Dynamics
  • Atmospheric and Environmental Gas Dynamics
  • Hydrological Forecasting Using AI
  • Geology and Paleoclimatology Research
  • Transboundary Water Resource Management
  • Geochemistry and Geologic Mapping
  • Seismic Imaging and Inversion Techniques
  • Marine and coastal ecosystems
  • Hydrology and Drought Analysis
  • Geomagnetism and Paleomagnetism Studies
  • Soil and Water Nutrient Dynamics

Gestion de l'Eau, Acteurs, Usages
2015-2025

Institut de Recherche pour le Développement
2014-2025

Ho Chi Minh City University of Technology
2022

Université Clermont Auvergne
2017-2018

AgroParisTech
2016

Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement
2016

James Cook University
2007-2016

Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2016

Institut Agro Montpellier
2016

National Centre for Groundwater Research and Training
2011-2015

The Murray‐Darling Basin in southeast Australia is experiencing one of the most severe droughts observed recently world, driven by several years rainfall deficits and record high temperatures. This paper provides new basin‐scale observations multiyear drought, integrated to a degree rarely achieved on such large scale, assess response water resources severity drought. A combination Gravity Recovery Climate Experiment (GRACE) data with situ modeled hydrological shows propagation deficit...

10.1029/2008wr007333 article EN Water Resources Research 2009-04-01

The Hai River Basin (HRB) is a heavily irrigated region encompassing the North China Plain (NCP) in northeast China. In last decades, continuous lowering of groundwater levels had been reported NCP. This study used data from Gravity Recovery and Climate Experiment (GRACE) situ measurements to quantify recent changes storage 2003 2012. signal GRACE observations highlight sharp decline deep subsurface water stores (deep unsaturated zone systems) up rate 17.0 ± 4.3 mm year-1 between 2012 over...

10.1080/02626667.2014.916406 article EN Hydrological Sciences Journal 2014-05-07

Abstract High‐elevation mountains often constitute for basins important groundwater recharge sources through mountain‐front processes. These processes include streamflow losses and subsurface inflow from the mountain block. However, another key process is irrigation practices, where distributed across irrigated piedmont. In this study, coupled fluctuation measurements environmental tracers ( 18 O, 2 H, major ions) were used to identify compare natural anthropogenically induced recharge....

10.1002/hyp.13685 article EN Hydrological Processes 2019-12-20

This study examines the effects of groundwater depletion on salinity and nitrate contamination in a detritic unconfined alluvial aquifer. Over past five decades, aquifer has transitioned from shallow (40 m) due to significant water table declines. Groundwater analysis reveals moderate contamination, with levels highest zones but detectable at all depths. Dominant hydrochemical processes influencing include rock weathering, halite dissolution, reverse ion exchange.  The Haouz Plain,...

10.5194/egusphere-egu25-20250 preprint EN 2025-03-15

Abstract Utilising newly available instrumentation, the carbon balance in two small tropical catchments was measured during discharge events at high temporal resolution. Catchments share similar climatic conditions, but differ land use with one draining a pristine rainforest catchment, other fully cleared and cultivated catchment. The necessity of resolution sampling illustrated each where significant chemical changes occurred space few hours or less. Dissolved particulate transport...

10.1002/hyp.9716 article EN Hydrological Processes 2013-01-16

Abstract A portable Wavelength Scanned‐Cavity Ring‐Down Spectrometer (Picarro L2120) fitted with a diffusion sampler (DS‐CRDS) was used for the first time to continuously measure δ 18 O and 2 H of stream water. The experiment took place during storm event in wet tropical agricultural catchment north‐eastern Australia. At temporal resolution one minute, DS‐CRDS measured 2160 values over period 36 h precision ±0.08 0.5‰ H, respectively. Four main advantages using high data are highlighted from...

10.1002/hyp.10689 article EN Hydrological Processes 2015-09-10
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