Results 51 to 60 of about 7,153,219 (166)

River Sand and Gravel Mining: Global Drivers, Impacts, and Pathways for Sustainable Management

open access: yesReviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract River sand and gravel are mined worldwide at volumes that now rival their natural replenishment, yet quantitative knowledge of this mining activity and its consequences lags far behind many other global environmental pressures. We synthesize 411 peer‐reviewed studies published since 1974 within a new Driver‐to‐Management Pathway for ...
Edward Park   +25 more
wiley   +1 more source

High Resolution Field Observations of Shoreward Sediment Transport Within the Wave Bottom Boundary Layer on a Sandy Beach

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract We introduce a data archive containing the first highly resolved profiles of velocity and sediment concentration within the wave bottom boundary layer (WBBL) on a natural sandy beach. Resolution of the thin WBBL was made possible by deployment of a unique “Multi‐Frequency Doppler” (MFDop) bistatic acoustic profiling instrument on an Oregon ...
Gregory W. Wilson   +4 more
wiley   +1 more source

Marion F. Baugh and Guy Longshore Collection

open access: yes, 1945
“The Beginning of the End of World War II” by Guy Longshore is an account of Longshore’s experience in the final days of the Pacific War. Longshore recalls watching the Enola Gay take off and running supplies to POW camps throughout Japan. Longshore also
Longshore, Guy
core   +1 more source

Direct hydrodynamic measurements at the upper shoreface of a sandy beach in Paraná - Brazil

open access: yesOcean and Coastal Research
Sandy shorelines show heightened susceptibility to alterations, highlighting the importance of reliable field measurements in forecasting coastal evolution.
Mauricio A. Noernberg, Pedro A. Rodrido
doaj   +2 more sources

The Importance and Mechanics of Near‐Seafloor Oxygenation Events in Shallow Coastal Environments

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.
Abstract Bottom‐water oxygen (O2) possibly constitutes the strongest regulating factor on ecosystem function of the seafloor environment. The conventional view of bottom‐water O2 regulation in temperate regions is a strong seasonal variability imposed by deposition of fresh, labile organic carbon following the spring and fall plankton bloom generating ...
Jonas P. Fredriksson   +4 more
wiley   +1 more source

Sedimentation processes and beach morphodynamics active at the Doce River mouth, Espírito Santo State, Brazil

open access: yesAnais da Academia Brasileira de Ciências, 2010
The coastal sedimentation model in the Doce River mouth and surroundings extends beyond the hydraulic jetty effect created by its stream-flow. During flooding, marine sediments transported by longshore currents are retained on the updrift side, causing ...
Jacqueline Albino, Kenitiro Suguio
doaj   +1 more source

Ecology of reintroduced Rocky Mountain bighorn sheep in Dinosaur National Monument La Ecología de Borrego Cimarron de las Montañas Rocosas Reintroducido en el Monumento Nacional de Dinosaurio

open access: yesWildlife Monographs, Volume 223, Issue 1, August 2026.
We synthesized GPS telemetry, genetic, and pathogen data to evaluate metapopulation processes in a reintroduced Rocky Mountain bighorn sheep (Ovis canadensis canadensis) population in Dinosaur National Monument. We estimated subpopulation‐specific abundances and found 4 small subpopulations with high genetic diversity, partial connectivity, and ...
Sarah L. Carroll   +8 more
wiley   +1 more source

A sketch of the life and work of Joseph S. Longshore, including an account of the origin of the Female Medical College of Pennsylvania

open access: yes, 1893
A Sketch of the Life and Work of Joseph S. Longshore, including an account of the origin of the Female Medical College of Pennsylvania, by Thomas Longshore.
Longshore, Thomas E.
core  

Assessing Embayed Equilibrium State, Beach Rotation and Environmental Forcing Influences; Tenby Southwest Wales, UK

open access: yesJournal of Marine Science and Engineering, 2016
The morphological change of a headland bay beach—Tenby, West Wales, UK—was analysed over a 73-year period (1941–2014). Geo-referenced aerial photographs were used to extract shoreline positions which were subsequently compared with wave models based on ...
Tony Thomas   +4 more
doaj   +1 more source

Increasing Frequency of Coastal Erosion Indicated by a Hindcast Model of Storm‐Driven Forcing Calibrated With Beach Stratigraphy

open access: yesEarth's Future, Volume 14, Issue 8, August 2026.
Abstract Beach stratigraphy at North Beach, Sandy Hook, New Jersey is used to calibrate a model of coastal erosion, establish a model‐based erosion threshold, and evaluate how often threshold conditions have been exceeded since 1979 through hindcast analysis.
W. John Schmelz   +4 more
wiley   +1 more source

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