Geophysical Research Letters

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Direct simulation of electrical and hydraulic tortuosity in porous solids
Geophysical Research Letters - Tập 22 Số 17 - Trang 2333-2336 - 1995
Xiaodong Zhang, Mark Knackstedt
We directly evaluate the fluid‐flow and electrical conductivity of model three dimensional random porous medium at a microscopic level. This allows a direct test of the popular assumption that fluid‐flow and electrical current follow equivalent flow paths in porous solids. Visualisation of the fluid‐flow and electric‐current streamlines within identical porous samples show this assumption is incor... hiện toàn bộ
Infrared reflectance spectra (2.2–15 μm) of plagioclase feldspars
Geophysical Research Letters - Tập 18 Số 6 - Trang 1151-1154 - 1991
Douglas B. Nash, John W. Salisbury
Laboratory results show that (1) the Christiansen frequency (CF) feature in mid‐infrared reflectance spectra of powders can be used to accurately distinguish plagioclase composition, and (2) the wavelength position of the CF is not affected by vitrification of the plagioclase. Although the CF position does not distinguish glass from crystalline forms of plagioclase, other features (combination‐ton... hiện toàn bộ
The influence of large dams on surrounding climate and precipitation patterns
Geophysical Research Letters - Tập 38 Số 4 - Trang n/a-n/a - 2011
Ahmed M. Degu, Faisal Hossain, Dev Niyogi, Roger A. Pielke, J. Marshall Shepherd, Nathalie Voisin, Themis Chronis
Impact of nesting strategies in dynamical downscaling of reanalysis data
Geophysical Research Letters - Tập 31 Số 19 - 2004
Alexander Beck, Bodo Ahrens, K. Stadlbacher
Coarse–grid global numerical weather simulations or analysis data have to be downscaled, e.g., with nested limited–area models (LAMs), for regional interpretation. Here, the impact of different one–way nesting strategies on precipitation simulations over the European Alps with the LAM ALADIN is studied. The LAM is forced by initial and lateral boundary data derived from ERA40 reanalyses with 120 k... hiện toàn bộ
Dam Construction in Lancang‐Mekong River Basin Could Mitigate Future Flood Risk From Warming‐Induced Intensified Rainfall
Geophysical Research Letters - Tập 44 Số 20 - 2017
Wei Wang, Hui Lü, L. Ruby Leung, Hong‐Yi Li, Jianshi Zhao, Fuqiang Tian, Kun Yang, Sothea Khem
AbstractWater resources management, in particular flood control, in the Lancang‐Mekong River Basin (LMRB) faces two key challenges in the 21st century: climate change and dam construction. A large‐scale distributed Geomorphology‐Based Hydrological Model coupled with a simple reservoir regulation model (GBHM‐LMK‐SOP) is used to investigate the relative effects of climate change and dam construction... hiện toàn bộ
Upstream urbanization exacerbates urban heat island effects
Geophysical Research Letters - Tập 36 Số 24 - 2009
Da‐Lin Zhang, Yixuan Shou, Russell R. Dickerson
Urban Heat Island (UHI) effects adversely impact weather, air quality, and climate. Previous studies have attributed UHI effects to localized, surface processes. Based on an observational and modeling study of an extreme UHI (heat wave) episode in the Baltimore metropolitan region, we find that upstream urbanization exacerbates UHI effects and that meteorological consequences of extra‐urban develo... hiện toàn bộ
Greenland‐Wide Seasonal Temperatures During the Last Deglaciation
Geophysical Research Letters - Tập 45 Số 4 - Trang 1905-1914 - 2018
Christo Buizert, Benjamin A. Keisling, Jason E. Box, Feng He, Anders E. Carlson, G. Sinclair, Robert M. DeConto
AbstractThe sensitivity of the Greenland ice sheet to climate forcing is of key importance in assessing its contribution to past and future sea level rise. Surface mass loss occurs during summer, and accounting for temperature seasonality is critical in simulating ice sheet evolution and in interpreting glacial landforms and chronologies. Ice core records constrain the timing and magnitude of clim... hiện toàn bộ
A diffuse plate boundary model for Indian Ocean tectonics
Geophysical Research Letters - Tập 12 Số 7 - Trang 429-432 - 1985
Douglas A. Wiens, Charles DeMets, Richard G. Gordon, Seth Stein, Don Argus, Joseph F. Engeln, P. Lundgren, Dan Quible, Carol A. Stein, Stuart Weinstein, Dale Woods
Australia and India are conventionally thought to be contained in a single plate divided from an Arabian plate by the Owen Fracture Zone. We propose instead that motion along the nearly aseismic Owen Fracture Zone is negligible and that Arabia and India are contained within a single Indo‐Arabian plate, divided from the Australian plate by a diffuse boundary. This boundary, which trends E‐W from th... hiện toàn bộ
Stratospheric NO2 and H2O mixing ratio profiles from high resolution infrared solar spectra using nonlinear least squares
Geophysical Research Letters - Tập 7 Số 7 - Trang 489-492 - 1980
E. Niple, William G. Mankin, Alan S. Goldman, D. G. Murcray, F. J. Murcray
Nonlinear least squares spectral curve fitting has been used to derive vertical mixing ratio profiles for NO2 and H2O above 16 km from high resolution (∼.02 cm−1) solar spectra collected during sunset with a balloon borne interferometer. The NO2 profile shows a sharp peak of ˜8 ppbv at 32 km falling rapidly to <0.5 ppbv at 17 km. The H2O profile shows a broad peak of ˜6.5 ppmv at 30 km falling to ... hiện toàn bộ
Modeling episodic fluid‐release events in the ductile carbonates of the Glarus thrust
Geophysical Research Letters - Tập 41 Số 20 - Trang 7121-7128 - 2014
Thomas Poulet, Manolis Veveakis, Marco Herwegh, Thomas Buckingham, Klaus Regenauer‐Lieb
AbstractThe exposed Glarus thrust displays midcrustal deformation with tens of kilometers of displacement on an ultrathin layer, the principal slip zone (PSZ). Geological observations indicate that this structure resulted from repeated stick‐slip events in the presence of highly overpressured fluids. Here we show that the major characteristics of the Glarus thrust movement (localization, periodici... hiện toàn bộ
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