Search Results - "Marshall, P H"

Independent evaluation of the SNODAS snow depth product using regional-scale lidar-derived measurements by Hedrick, A, Marshall, H.-P, Winstral, A, Elder, K, Yueh, S, Cline, D

“…Repeated light detection and ranging (lidar) surveys are quickly becoming the de facto method for measuring spatial variability of montane snowpacks at high…”
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Ice Core Records of West Greenland Melt and Climate Forcing by Graeter, K. A., Osterberg, E. C., Ferris, D. G., Hawley, R. L., Marshall, H. P., Lewis, G., Meehan, T., McCarthy, F., Overly, T., Birkel, S. D.

“…Remote sensing observations and climate models indicate that the Greenland Ice Sheet (GrIS) has been losing mass since the late 1990s, mostly due to enhanced…”
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Seasonal and diurnal cycles of liquid water in snow-Measurements and modeling by Heilig, A., Mitterer, C., Schmid, L., Wever, N., Schweizer, J., Marshall, H.-P., Eisen, O.

“…Evaluating and improving snow models and outflow predictions for hydrological applications is hindered by the lack of continuous data on bulk volumetric liquid…”
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Reconstruction of historical surface mass balance, 1984–2017 from GreenTrACS multi-offset ground-penetrating radar by Meehan, Tate G., Marshall, H. P., Bradford, John H., Hawley, Robert L., Overly, Thomas B., Lewis, Gabriel, Graeter, Karina, Osterberg, Erich, McCarthy, Forrest

“…We present continuous estimates of snow and firn density, layer depth and accumulation from a multi-channel, multi-offset, ground-penetrating radar traverse…”
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Impact of spatial averaging on radar reflectivity at internal snowpack layer boundaries by RUTTER, N., MARSHALL, H.-P., TAPE, K., ESSERY, R., KING, J.

“…Microwave radar amplitude within a snowpack can be strongly influenced by spatial variability of internal layer boundaries. We quantify the impact of spatial…”
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Monitoring glacier surface seismicity in time and space using Rayleigh waves by Mikesell, T. D., van Wijk, K., Haney, M. M., Bradford, J. H., Marshall, H. P., Harper, J. T.

“…Sliding glaciers and brittle ice failure generate seismic body and surface wave energy characteristic to the source mechanism. Here we analyze continuous…”
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Soil, snow, weather, and sub-surface storage data from a mountain catchment in the rain–snow transition zone by Kormos, P. R, Marks, D, Williams, C. J, Marshall, H. P, Aishlin, P, Chandler, D. G, McNamara, J. P

“…A comprehensive hydroclimatic data set is presented for the 2011 water year to improve understanding of hydrologic processes in the rain–snow transition zone…”
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Within‐Stand Boundary Effects on Snow Water Equivalent Distribution in Forested Areas by Webb, R. W., Raleigh, M. S., McGrath, D., Molotch, N. P., Elder, K., Hiemstra, C., Brucker, L., Marshall, H. P.

“…Forested areas exhibit high spatial variability in the distribution of snow water equivalent (SWE). Previous work has focused on forested areas with respect to…”
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Snow distribution, melt and surface water inputs to the soil in the mountain rain–snow transition zone by Kormos, Patrick R., Marks, Danny, McNamara, James P., Marshall, H.P., Winstral, Adam, Flores, Alejandro N.

“…•Snow distribution, energetics, melt and resulting surface water inputs are simulated.•Southwest facing slopes receive frequent, mid winter SWI but are…”
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Snow Avalanche Detection and Source Constraints Made Using a Networked Array of Infrasound Sensors by Johnson, J. B., Anderson, J. F., Marshall, H. P., Havens, S., Watson, L. M.

“…We studied a triggered snow avalanche (∼60 s in duration and with ∼1,100 m run‐out) using a network of infrasound arrays and time‐synced video, with the…”
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Seismic detection and analysis of icequakes at Columbia Glacier, Alaska by O'Neel, Shad, Marshall, H. P., McNamara, D. E., Pfeffer, W. T.

“…Contributions to sea level rise from rapidly retreating marine‐terminating glaciers are large and increasing. Strong increases in iceberg calving occur during…”
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Inference and uncertainty of snow depth spatial distribution at the kilometre scale in the Colorado Rocky Mountains: the effects of sample size, random sampling, predictor quality, and validation procedures by McCreight, J. L., Slater, A. G., Marshall, H. P., Rajagopalan, B.

“…Historically, observing snow depth over large areas has been difficult. When snow depth observations are sparse, regression models can be used to infer the…”
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Depth-varying constitutive properties observed in an isothermal glacier by Marshall, H. P., Harper, J. T., Pfeffer, W. T., Humphrey, N. F.

“…Detailed three‐dimensional in‐situ measurements of deformation at depth are used to examine the rheology of a 6 × 106 m3 block of temperate glacier ice…”
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Mapping Snowmelt Progression in the Upper Indus Basin With Synthetic Aperture Radar by Lund, Jewell, Forster, Richard R., Rupper, Summer B., Deeb, Elias J., Marshall, H. P., Hashmi, Muhammad Zia, Burgess, Evan

“…The Indus River is a vital resource for food security, ecosystem services, hydropower, and economy for millions of people living in Pakistan, India, China, and…”
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Snow densification during rain by Marshall, H.P., Conway, H., Rasmussen, L.A.

“…Observations and measurements indicate rain often has a major impact on snow slope stability. Measurements to investigate the effects of wetting of low…”
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Annual Mass Balance of Blue Glacier, USA: 1955-97 by Conway, H., Rasmussen, L. A., H.-P. Marshall

“…Mass changes of Blue Glacier, USA are calculated from topographic maps made from vertical aerial photography in late summer of 1939, 1952, 1957, and 1987,…”
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Inhibition of nitric oxide synthase during hemorrhagic shock increases hepatic injury by Harbrecht, B G, Wu, B, Watkins, S C, Marshall, Jr, H P, Peitzman, A B, Billiar, T R

“…The function of nitric oxide (NO) in hemorrhagic shock is controversial. Increased NO synthesis has been temporally correlated with severe shock and has been…”
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Assessing the Representation of Wind, Terrain, and Vegetation Effects on Snow Density Distributed by Learned Regression Modeling by Meehan, Tate G., Deeb, Elias J., Marshall, H.P., O'Neel, Shad

“…In snowpacks the propagation speed of electromagnetic radiation is controlled by the snow depth, density, and the amount of liquid water stored within the pore…”
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Using Phase-Delay Approaches to Estimate Snow Properties: A Comparison of Airborne L-Band InSAR and Ground-Based 6-18 GHz FMCW Radar Observations During the NASA SnowEx 2020 Grand Mesa Campaign by Marshall, H.P., Storms, Scott, Deeb, Elias, Forster, Rick, Vuyovich, Carrie, Elder, Kelly, Durand, Mike, Hiemstra, Chris

“…During 2020 and 2021, the NASA SnowEx Mission performed a time series with UAVSAR, and L-band InSAR, in the Western U.S. Small field efforts were performed…”
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Uncertainty of ICESat-2 ATL06- and ATL08-derived snow depths for glacierized and vegetated mountain regions by Enderlin, Ellyn M., Elkin, Colten M., Gendreau, Madeline, Marshall, H.P., O'Neel, Shad, McNeil, Christopher, Florentine, Caitlyn, Sass, Louis

“…Seasonal snow melt dominates the hydrologic budget across a large portion of the globe. Snow accumulation and melt vary over a broad range of spatial scales,…”
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