Výsledky vyhledávání - "Glenn E. Hammond"

Massively Parallel Modeling and Inversion of Electrical Resistivity Tomography data using PFLOTRAN

Autor: Piyoosh Jaysaval, Glenn E. Hammond, Timothy C. Johnson

Electrical resistivity tomography (ERT) is a broadly accepted geophysical method for subsurface investigations. Interpretation of field ERT data usually requires the application of computationally intensive forward modeling and inversion algorithms.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8971c1a8eb7d3defdd5125194ed41d3e
https://gmd.copernicus.org/preprints/gmd-2022-66/

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Can Simple Machine Learning Tools Extend and Improve Temperature-Based Methods to Infer Streambed Flux?

Autor: Glenn E. Hammond, Xingyuan Chen, Ty P. A. Ferré, Mohammad A. Moghaddam, Xuehang Song, Kewei Chen

Publikováno v: Water
Volume 13
Issue 20
Water, Vol 13, Iss 2837, p 2837 (2021)

Temperature-based methods have been developed to infer 1D vertical exchange flux between a stream and the subsurface. Current analyses rely on fitting physically based analytical and numerical models to temperature time series measured at multiple de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd24b08f6dde5a9160a482666c188365

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Effect of Glacial/Interglacial Recharge Conditions on Flow of Meteoric Water Through Deep Orogenic Faults: Insights Into the Geothermal System at Grimsel Pass, Switzerland

Autor: Larryn W. Diamond, Glenn E. Hammond, Christoph Wanner, Peter Alt-Epping

Publikováno v: Alt-Epping, Peter; Diamond, Larryn W.; Wanner, Christoph; Hammond, Glenn E. (2021). Effect of Glacial/Interglacial Recharge Conditions on Flow of Meteoric Water Through Deep Orogenic Faults: Insights Into the Geothermal System at Grimsel Pass, Switzerland. Journal of Geophysical Research: Solid Earth, 126(7) American Geophysical Union 10.1029/2020JB021271

Many meteoric-recharged, fault-hosted geothermal systems in amagmatic orogenic belts have been active through the Pleistocene glacial/interglacial climate fluctuations. The effects of climate-induced recharge variations on fluid flow patterns and res

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab381cb52b359146e288fe4a9c693f9e
https://boris.unibe.ch/166729/1/Alt-Epping__Diamond__Wanner__Hammond_2021_Effect_of_Glacial_Interglacial_Recharge_at_Grimsel_Pass__Switzerland.pdf

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Understanding Contaminant Migration Within a Dynamic River Corridor Through Field Experiments and Reactive Transport Modeling

Autor: Xingyuan Chen, Mark D. Freshley, Yilin Fang, Glenn E. Hammond, John M. Zachara, Vince R. Vermuel

Publikováno v: Frontiers in Water, Vol 2 (2020)

The behavior of a persistent uranium plume within an extended river corridor at the DOE Hanford site is dominantly controlled by river stage fluctuations in the adjacent Columbia River. The plume behavior is further complicated by substantial heterog

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d551a690dfcfc12e9c7374406f01b8da
https://www.frontiersin.org/articles/10.3389/frwa.2020.533796/full

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Applying Simple Machine Learning Tools to Infer Streambed Flux from Subsurface Pressure and Temperature Observations

Autor: Paul A. Ferre, Kewei Chen, Mohammad A. Moghaddam, Xingyuan Chen, Xuehang Song, Glenn E. Hammond

We demonstrate the application of two simple machine learning tools - regression tree and gradient boosting analyses - to a hydrologic inference problem to address two objectives. The first goal wa...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6424cdc54e0c908de4293925b6dc3595
https://doi.org/10.1002/essoar.10502715.1

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