12 hasil untuk "Grant Ferguson"
Menampilkan 1–12 · 0,45 detik · RSS
-
Artikel Jurnal
Subsurface energy footprints
Anthropogenic climate change and energy security concerns have created a demand for new ways of meeting society’s demand for energy. The Earth’s crust is being targeted in a variety of energy developments to either extract energy or facilitate the use of other energy resources by sequestering…
-
Artikel Jurnal
Extremism in survey measures of ideology
Research on mass political behavior relies extensively on ideology scales. The majority of political science surveys use a unique, and potentially problematic, word to anchor the endpoints of these scales (“extremely”). However, political science has surprisingly little evidence on the effects of…
-
Artikel Jurnal
The evolution of the geothermal potential of a subsurface urban heat island
Meeting the rising energy demands of cities is a global challenge. Exploitation of the additional heat in the subsurface associated with the subsurface urban heat island (SUHI) has been proposed to address the heating demands. For the sustainable use of this heat it is crucial to understand how…
-
Artikel Jurnal
Competition for shrinking window of low salinity groundwater
Groundwater resources are being stressed from the top down and bottom up. Declining water tables and near-surface contamination are driving groundwater users to construct deeper wells in many US aquifer systems. This has been a successful short-term mitigation measure where deep groundwater is…
-
Artikel Jurnal
The low permeability of the Earth’s Precambrian crust
Abstract The large volume of deep groundwater in the Precambrian crust has only recently been understood to be relatively hydrogeologically isolated from the rest of the hydrologic cycle. The paucity of permeability measurements in Precambrian crust below 1.3 km is a barrier to modeling fluid flow…
-
Artikel Jurnal Teks lengkap
Global Groundwater Sustainability, Resources, and Systems in the Anthropocene
Groundwater is a crucial resource for current and future generations, but it is not being sustainably used in many parts of the world. The objective of this review is to provide a clear portrait of global-scale groundwater sustainability, systems, and resources in the Anthropocene to inspire a…
-
Artikel Jurnal
Groundwater deeper than 500 m contributes less than 0.1% of global river discharge
At depths of over 500 m, deep groundwater has long residence times and likely contributes less than 0.1% to global streamflow and only sporadically connects with the surface terrestrial water cycle on geological timescales, according to estimates derived from the chloride mass balance approach.
-
Artikel Jurnal
Burial and Denudation Alter Microbial Life at the Bottom of the Hypo‐Critical Zone
Abstract How subsurface microbial life changed at the bottom of the kilometers‐deep (hypo) Critical Zone in response to evolving surface conditions over geologic time is an open question. This study investigates the burial and exhumation, biodegradation, and fluid circulation history of hydrocarbon…
-
Artikel Jurnal
Acceleration of Deep Subsurface Fluid Fluxes in the Anthropocene
Abstract The Anthropocene has been framed around humanity's impact on atmospheric, biologic, and near‐surface processes, such as land use and vegetation change, greenhouse gas emissions, and the above‐ground hydrologic cycle. Groundwater extraction has lowered water tables in many key aquifers but…
-
Artikel Jurnal
Variations in Groundwater Recharge and Water Table Elevations Across the Holocene in a Semi‐Arid Alluvial Basin
Abstract Many regional aquifer systems undergoing depletion contain “fossil” groundwater recharged under different climate conditions, raising questions on groundwater renewability. We examine the spatial distribution in groundwater ages estimated with multiple tracers covering different…
-
Artikel Jurnal
Crustal Groundwater Volumes Greater Than Previously Thought
Abstract Global groundwater volumes in the upper 2 km of the Earth's continental crust—critical for water security—are well estimated. Beyond these depths, a vast body of largely saline and non‐potable groundwater exists down to at least 10 km—a volume that has not yet been quantified reliably at…
-
Artikel Jurnal
A review of open data for studying global groundwater in social–ecological systems
Global data have served an integral role in characterizing large-scale groundwater systems, identifying their sustainability challenges, and informing on socioeconomic and ecological dimensions of groundwater. These insights have revealed groundwater as a dynamic component of the water cycle and…