Multiscale geophysical imaging of the critical zone

AD Parsekian, K Singha, BJ Minsley… - Reviews of …, 2015 - Wiley Online Library
Details of Earth's shallow subsurface—a key component of the critical zone (CZ)—are
largely obscured because making direct observations with sufficient density to capture …

How temperature-dependent silicate weathering acts as Earth's geological thermostat

SL Brantley, A Shaughnessy, MI Lebedeva… - Science, 2023 - science.org
Earth's climate may be stabilized over millennia by solubilization of atmospheric carbon
dioxide (CO2) as minerals weather, but the temperature sensitivity of this thermostat is …

Geophysical constraints on deep weathering and water storage potential in the Southern Sierra Critical Zone Observatory

WS Holbrook, CS Riebe, M Elwaseif… - Earth Surface …, 2014 - Wiley Online Library
The conversion of bedrock to regolith marks the inception of critical zone processes, but the
factors that regulate it remain poorly understood. Although the thickness and degree of …

Groundwater flows in weathered crystalline rocks: Impact of piezometric variations and depth-dependent fracture connectivity

N Guihéneuf, A Boisson, O Bour, B Dewandel… - Journal of …, 2014 - Elsevier
Groundwater in shallow weathered and fractured crystalline rock aquifers is often the only
perennial water resource, especially in semi-arid region such as Southern India …

Major and trace element geochemistry of Bay of Bengal sediments: Implications to provenances and their controlling factors

GR Tripathy, SK Singh, V Ramaswamy - Palaeogeography …, 2014 - Elsevier
Major and trace elements of sediments from a~ 13-m long piston core (SK187/PC33) from
the western Bay of Bengal have been investigated in this study to infer about the changes in …

Groundwater irrigation reduces overall poverty but increases socioeconomic vulnerability in a semiarid region of southern India

C Fischer, C Aubron, A Trouvé, M Sekhar, L Ruiz - Scientific Reports, 2022 - nature.com
The development of irrigation is generally considered an efficient way to reduce poverty in
rural areas, although its impact on the inequality between farmers is more debated. In fact …

Chemistry and microbiology of the Critical Zone along a steep climate and vegetation gradient in the Chilean Coastal Cordillera

RA Oeser, N Stroncik, LM Moskwa, N Bernhard… - Catena, 2018 - Elsevier
Abstract The Chilean Coastal Cordillera features a spectacular climate and vegetation
gradient, ranging from arid and unvegetated areas in the north to humid and forested areas …

Where fast weathering creates thin regolith and slow weathering creates thick regolith

E Bazilevskaya, M Lebedeva, M Pavich… - Earth Surface …, 2013 - Wiley Online Library
Weathering disaggregates rock into regolith–the fractured or granular earth material that
sustains life on the continental land surface. Here, we investigate what controls the depth of …

Potash fertilizer promotes incipient salinization in groundwater irrigated semi-arid agriculture

S Buvaneshwari, J Riotte, M Sekhar, AK Sharma… - Scientific reports, 2020 - nature.com
Incipient groundwater salinization has been identified in many arid and semi-arid regions
where groundwater is increasingly used for irrigation, but the dominant processes at stake in …

Groundwater resource vulnerability and spatial variability of nitrate contamination: insights from high density tubewell monitoring in a hard rock aquifer

S Buvaneshwari, J Riotte, M Sekhar… - Science of the Total …, 2017 - Elsevier
Agriculture has been increasingly relying on groundwater irrigation for the last decades,
leading to severe groundwater depletion and/or nitrate contamination. Understanding the …