Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Robert P. Ewing"'
Publikováno v:
Remote Sensing, Vol 12, Iss 15, p 2370 (2020)
With the decline of operational river gauges monitoring sediments, a viable means of quantifying sediment transport is needed. In this study, we address this issue by applying relationships between hydraulic geometry of river channels, water discharg
Externí odkaz:
https://doaj.org/article/ee123ba4e5494029b91e61eefda21ac9
Publikováno v:
Vadose Zone Journal, Vol 13, Iss 8, Pp 1-6 (2014)
The saturated hydraulic conductivity, Ks, is a fundamental characteristic of subsurface flow and the hydrologic cycle. However, direct measurement of Ks is time consuming. Recently, air permeability measurements at 50 and 100 cm of H2O tension, a rel
Externí odkaz:
https://doaj.org/article/e0277fe36cee4d60b974a86db6a05e1c
Publikováno v:
Remote Sensing, Vol 12, Iss 2370, p 2370 (2020)
Remote Sensing
Volume 12
Issue 15
Remote Sensing
Volume 12
Issue 15
With the decline of operational river gauges monitoring sediments, a viable means of quantifying sediment transport is needed. In this study, we address this issue by applying relationships between hydraulic geometry of river channels, water discharg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e9fe954ffd0090ccbbce0142055ef10
https://www.mdpi.com/2072-4292/12/15/2370
https://www.mdpi.com/2072-4292/12/15/2370
Autor:
Susan L. Brantley, Jon D. Chorover, John M. Zachara, Chongxuan Liu, Andrew G. Stack, Gernot Rother, Edmund Perfect, Sebastien N. Kerisit, Robert P. Ewing
Publikováno v:
Environmental Science & Technology. 50:2811-2829
Internal pore domains exist within rocks, lithic fragments, subsurface sediments, and soil aggregates. These domains, termed internal domains in porous media (IDPM), represent a subset of a material's porosity, contain a significant fraction of their
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24e6cba38d64af21cd68c8743f6ae488
https://doi.org/10.1021/acs.est.5b05015
https://doi.org/10.1021/acs.est.5b05015
Publikováno v:
Journal of Geophysical Research: Solid Earth. 120:8073-8087
Gas-producing wells in the Barnett Formation show a steep decline from initial production rates, even within the first year, and only 12–30% of the estimated gas-in-place is recovered. The underlying causes of these production constraints are not w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::791cbb18f45ec2808c5bc1c99af52648
https://doi.org/10.1002/2015jb012103
https://doi.org/10.1002/2015jb012103
Autor:
Sotirios V. Archontoulis, Robert Horton, Robert P. Ewing, Matthew J. Helmers, Matt Liebman, Meghann Jarchow, Ranae Dietzel
Publikováno v:
Global Change Biology. 22:666-681
Agricultural systems are being challenged to decrease water use and increase production while climate becomes more variable and the world's population grows. Low water use efficiency is traditionally characterized by high water use relative to low gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::282a096e81bee033cf7bf54999cf28d6
https://doi.org/10.1111/gcb.13101
https://doi.org/10.1111/gcb.13101
Publikováno v:
Soil Science Society of America Journal. 79:1018-1029
A fundamental principle of measurement and analysis is that methods must be self-consistent. For example, if a soil’s gas diffusion properties were precisely known, then measuring gas diffusion in that soil should yield the known result. We tested
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21754dd368231204b4c0102b6b0342bb
https://doi.org/10.2136/sssaj2014.09.0391
https://doi.org/10.2136/sssaj2014.09.0391
Publikováno v:
Journal of Geophysical Research: Solid Earth. 120:182-190
Understanding and accurate prediction of gas or liquid phase (solute) diffusion are essential to accurate prediction of contaminant transport in partially saturated porous media. In this study, we propose analytical equations, using concepts from per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45c86e5ca866ddb0f2e3dc3e8cad1c9a
https://doi.org/10.1002/2014jb011645
https://doi.org/10.1002/2014jb011645
Field Test and Sensitivity Analysis of a Sensible Heat Balance Method to Determine Soil Ice Contents
Autor:
Joshua L. Heitman, Gerald N. Flerchinger, Robert Horton, Robert P. Ewing, Yuki Kojima, Tusheng Ren
Publikováno v:
Vadose Zone Journal. 13:1-10
Soil ice content impacts winter vadose zone hydrology. It may be possible to estimate changes in soil ice content with a sensible heat balance (SHB) method, using measurements from heat pulse (HP) sensors. Feasibility of the SHB method is unknown bec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4c972b8497c7b1e3b8db053706dc5bc
https://doi.org/10.2136/vzj2014.04.0036
https://doi.org/10.2136/vzj2014.04.0036
Publikováno v:
Geophysical Research Letters. 41:3884-3890
The porosity dependence of the formation factor for geologic media is examined from the perspective of universal scaling laws from percolation and effective medium theories. Over much of the range of observed porosity, the expected percolation scalin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a46fbaac39578a9edb6ec522233a0bcc
https://doi.org/10.1002/2014gl060180
https://doi.org/10.1002/2014gl060180