Results 81 to 90 of about 2,062 (173)

Broadband Dielectric Analysis of Clays: Impact of Cation Exchange Capacity, Water Content, and Porosity

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Clay‐rich soils and sediments are key components of near‐surface systems, influencing water retention, ion exchange, and structural stability. Their complex dielectric response under moist conditions arises from surface–ion electrostatics and diffuse double layers that govern transport and retention processes. This study explores the broadband
Felix Schmidt, Norman Wagner, Ines Mulder, Katja Emmerich, Thierry Bore, Jan Bumberger   +5 more
wiley   +1 more source

Validating HF Radar Current Accuracy via Lagrangian Measurements and Radar-to-Radar Comparisons in Highly Variable Surface Currents

Remote Sensing
The validation of HF radar systems remains an area with significant scope for advancement, particularly in terms of linking data quality with system operational parameters, fully utilizing the potential of redundant data (e.g., overlapping radial ...
Bartolomeo Doronzo, Michele Bendoni, Stefano Taddei, Angelo Boccacci, Carlo Brandini   +4 more
doaj   +1 more source

Passive Microwave Radiometry and Active Radar Sounding as Complementary Tools for Geophysical Investigations of Icy Ocean Worlds

Journal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Juno Microwave Radiometer (MWR) observations of Europa and Ganymede offer critical insights into the icy shells of these moons ahead of NASA's Europa Clipper and ESA's JUpiter ICy moons Explorer (JUICE) missions. Both missions are equipped with active radar sounders designed to address key unknowns such as ice shell thickness, thermal state ...
Natalie S. Wolfenbarger, Anna L. Broome, Dustin M. Schroeder, Anton I. Ermakov, Scott J. Bolton, Donald D. Blankenship   +5 more
wiley   +1 more source

Global Biodiversity Framework Targets Can Drive Action on Insect Declines, but Lack Robust Indicators to Prove Their Effectiveness

Conservation Letters, Volume 19, Issue 2, March/April 2026.
ABSTRACT Insects are the most diverse and functionally important animals on Earth. In at least some regions, terrestrial populations are declining. Despite this, insects are often overlooked in conservation policy, and it is difficult to assess how anthropogenic threats and conservation actions affect insect populations.
Andrew J. Bladon, Perpetra Akite, Shawan Chowdhury, Federico Riva, Rob Cooke, Ellie E. Dyer, Joseph Millard, Charlotte L. Outhwaite, James G. Rodger, Cang Hui, Justin E. Isip, J. Iwan Jones, John F. Murphy, Tim Newbold, Andy Purvis, Helen E. Roy, Grace Skinner, Ben A. Woodcock, Iris Berger, Sayam U. Chowdhury, William H. Morgan, András Báldi, Harriet Bartlett, Péter Batáry, Áron D. Bihaly, Amaël Borzée, Karel Chobot, Joette Crosier, Kristy Deiner, Adam J.M. Devenish, Arne Devriese, Anna Ermakova, Harith Farooq, Alexander Fedotov, Jonáš Gaigr, Róbert Gallé, Alexandre Gategeko, Huanzhi Gong, Ian Gordon, Felix Herzog, Andrew Jacobson, Vignesh Kamath, Upma Manral, Riho Marja, Caroline Martin, Delphine Mpayimana, Fiona Mutekanga, Piotr Naskrecki, Philbert Ndahayo, Donath Nkurikiyimana, Jean de Dieu Nsenganeza, Jean Pierre Ntibabarira, Joseph Poston, Chevonne Reynolds, Jean Aimé Ruticumugambi, Prahalad Srikanthan, Edina Török, Inam Yekwayo, Nick J.B. Isaac, Lynn V. Dicks   +59 more
wiley   +1 more source

Application of HF Radar in Hazard Management

International Journal of Antennas and Propagation, 2016
A review is given of the impact that HF radars are having on the management of coastal hazards. Maps of surface currents can be produced every 10–20 minutes which, in real time, improve navigation safety in restricted areas commonly found near ports and ...
Mal Heron, Roberto Gomez, Bernd Weber, Anna Dzvonkovskaya, Thomas Helzel, Nicolas Thomas, Lucy Wyatt   +6 more
doaj   +1 more source

Seasonal to Interannual Cross‐Scale Energy Transfer Variability: Observational Insight From the Santa Barbara Channel

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Kinetic energy (KE) transfer between spatial scales contributes to the ocean's energy budget by linking scales of KE supply and KE dissipation. Numerical simulations have indicated that for scales smaller than the baroclinic deformation radius, cross‐scale KE transfer has complex spatial and temporal variability, modulated by mixed layer ...
Sara Taylor, Andrew F. Thompson, Luke Kachelein, Patrice Klein   +3 more
wiley   +1 more source

DEDNet: Offshore Eddy Detection and Location with HF Radar by Deep Learning. [PDF]

Sensors (Basel), 2020
Liu F, Zhou H, Wen B.
europepmc   +1 more source

Intercomparison of Surface Currents Obtained Using SCHISM and the HF Radar Data in Galveston Bay and Sabine Lake, Texas

Journal of Marine Science and Engineering
This study provides a comprehensive analysis and intercomparison of surface currents, for Galveston Bay and Sabine Lake, Texas, obtained from High-Frequency (HF) radars and SCHISM model.
Cletus O. Ogbodo, Rosa M. Fitzgerald, Christopher Fuller, Jungwoo Lee, Roberto Perea, Javier Polanco-Gonzalez   +5 more
doaj   +1 more source

HF Radar Activity in European Coastal Seas: Next Steps toward a Pan-European HF Radar

, 2017
High Frequency Radar (HFR) is a land-based remote sensing instrument offering a unique insight to coastal ocean variability, by providing synoptic, high frequency and high resolution data at the ocean atmosphere interface. HFRs have become invaluable tools in the field of operational oceanography for measuring surface currents, waves and winds, with ...
Rubio Anna, Mader Julien, Corgnati Lorenzo, Mantovani Carlo, Griffa Annalisa, Novellino Antonio, Quentin Celine, Wyatt Lucy, SchulzStellenfleth Johannes, Horstmann Jochen, Lorente Pablo, Zambianchi Enrico, Hartnett Michael, Fernandes Carlos, Zervakis Vassilis, Gorringe Patrick, Melet Angelique, Puillat Ingrid   +17 more
openaire   +2 more sources

The European HF Radar inventory

, 2016
The inventory of the different HF radar systems operating in Europe has been gathered thanks to the survey launched by the EuroGOOS HFR Task Team, in the framework of INCREASE and JERICO-NEXT projects. We are very grateful to all the people who kindly provided the information of their radar and related activities.
Mader, Julien, Rubio, Anna, Asensio, J. L., Novellino, Antonio, Alba, Marco, Corgnati, Lorenzo, Mantovani, Carlo, Griffa, Annalisa, Gorringe, Patrick, Fernandez, Vicente, Drago, Aldo   +10 more
openaire   +1 more source