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Numerical studies of depressurization-induced gas production from an interbedded marine turbidite gas hydrate reservoir model Numerical studies of depressurization-induced gas production from an interbedded marine turbidite gas hydrate reservoir model

The numerical simulation of thin hydrate-bearing sand layers interbedded with mud layers is investigated. In this model, the lowest hydrate layer occurs at the base of gas hydrate stability and overlies a thinly-interbedded saline aquifer. The predicted gas rates reach 6.25 MMscf/day (1.77 x 105 m3 /day) after 90 days of continuous depressurization with manageable water production...
Authors
Evgeniy Myshakin, Jeen-Shang Lin, Shun Uchida, Yongkoo Seol, Timothy S. Collett, Ray Boswell
By
Energy Resources Program, Central Energy Resources Science Center

The increasingly complex challenge of gas hydrate reservoir simulation The increasingly complex challenge of gas hydrate reservoir simulation

No abstract available.
Authors
Ray Boswell, Timothy S. Collett, Evshakin Myshakin, Taiwo Ajayi, Yongkoo Seol
By
Energy Resources Program, Central Energy Resources Science Center

Use of eddy-covariance methods to "calibrate" simple estimators of evapotranspiration Use of eddy-covariance methods to "calibrate" simple estimators of evapotranspiration

Direct measurement of actual evapotranspiration (ET) provides quantification of this large component of the hydrologic budget, but typically requires long periods of record and large instrumentation and labor costs. Simple surrogate methods of estimating ET, if “calibrated” to direct measurements of ET, provide a reliable means to quantify ET. Eddy-covariance measurements of ET were...
Authors
David M. Sumner, Jeffrey S. Geurink, Amy Swancar
By
Caribbean-Florida Water Science Center (CFWSC)

Active tectonics of the northern Mojave Desert: The 2017 Desert Symposium field trip road log Active tectonics of the northern Mojave Desert: The 2017 Desert Symposium field trip road log

The 2017 Desert Symposium field trip will highlight recent work by the U.S. Geological Survey geologists and geophysicists, who have been mapping young sediment and geomorphology associated with active tectonic features in the least well-known part of the eastern California Shear Zone (ECSZ). This area, stretching from Barstow eastward in a giant arc to end near the Granite Mountains on...
Authors
David M. Miller, R.E. Reynolds, Geoffrey Phelps, Jeffrey S. Honke, Andrew J. Cyr, David C. Buesch, Kevin M. Schmidt, G. Losson
By
Geology, Energy, and Minerals Mission Area, Energy Resources Program, Mineral Resources Program, National Laboratories Program, Science and Decisions Center, Geology, Minerals, Energy, and Geophysics Science Center

Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A. Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.

The degradation of coastal habitats, particularly coral reefs, raises risks by exposing communities to flooding hazards. The protective services of these natural defenses are not assessed in the same rigorous, economic terms as artificial defenses such as seawalls, and therefore often not considered in decision-making. Here we present a new methodology that combines economic, ecological...
Authors
Curt D. Storlazzi, Borja G. Reguero, Erik Lowe, James B. Shope, Ann E. Gibbs, Mike Beck, Barry A. Nickel
By
Natural Hazards Mission Area, Coastal and Marine Hazards and Resources Program, Pacific Coastal and Marine Science Center

Wave dynamics and flooding on low-lying tropical reef-lined coasts Wave dynamics and flooding on low-lying tropical reef-lined coasts

Many tropical islands and coasts are lined with coral reefs. These reefs are host to valuable ecosystems that support abundant marine species and provide resources for fisheries and recreation. As a flood defense, reefs protect coastlines from coastal storm damage and flooding by reducing the majority of incident wave energy. However, during storm and large swell conditions, coastal wave...
Authors
Ap van Dongeran, Curt D. Storlazzi, Ellen Quataert, Stuart Pearson
By
Pacific Coastal and Marine Science Center
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