Results 261 to 270 of about 64,792 (321)

Potential and constraints of uncrewed aerial vehicle orthoimagery for rivers: A direct comparison with field measurements for mapping boulders

open access: yesEarth Surface Processes and Landforms, Volume 50, Issue 8, 30 June 2025.
Both field and drone surveys are commonly used to map river landforms. Comparing the two, we found that drones consistently underestimated boulder density and coverage by 30%, with the difference best explained by water depth. Abstract Technological advances continue to improve our ability to detect landforms and landscape changes.
Christopher Wård   +3 more
wiley   +1 more source

Stratigraphic Evidence of Backwater Morphodynamics and Lowland River Deltas in the Northern Hemisphere of Mars

open access: yesGeophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract Backwater morphodynamics describe feedbacks between hydraulics and sedimentation in fluvio‐deltaic systems in the coastal backwater zone. On Earth, normalized channel belt width decreases approaching the coastline and drops sharply at the start of the backwater zone.
C. M. Hughes   +3 more
wiley   +1 more source

Volcanic Radiative Power Retrieval From Moderate‐to‐Low‐Temperature Features Using a Single TIR Band: Validation Using Volcanic Crater Lakes and Hydrothermal Systems

open access: yesGeophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract Assessing Radiative Power (RP) output is essential for monitoring and understanding volcanic systems. While Mid‐Infrared channels are used to assess thermal outputs at volcanoes exhibiting effusive activity, Thermal‐InfraRed (TIR) bands are better suited for measuring moderate‐to‐low‐temperature (≲600 K) features, such as those associated with
Simone Aveni   +4 more
wiley   +1 more source

Multidirectional Dune Dynamics Under Seasonal Winds on Mars

open access: yesGeophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract We present a systematic assessment of the complex aeolian bedforms across the western rim of Hellas Planitia, the largest impact basin on Mars. Repeat orbital imaging shows crescentic, transverse, and star dunes across the Hellespontus Montes region migrate, converge, and occasionally reverse course.
Matthew Chojnacki   +4 more
wiley   +1 more source

The First Instrumentally Detected Hydrothermal Explosion in Yellowstone National Park

open access: yesGeophysical Research Letters, Volume 52, Issue 11, 16 June 2025.
Abstract Hydrothermal explosions are one of the geological hazards most likely to impact people in Yellowstone National Park, but their frequency is poorly known. Infrasound and seismic sensors identified an explosion in Norris Geyser Basin on 15 April 2024, at 14:56 MDT (20:56 UTC)—the first instrumentally detected hydrothermal explosion in the ...
Michael P. Poland   +3 more
wiley   +1 more source

Seismic resurfacing of 433 Eros indicative of a highly dissipative interior for large near-Earth asteroids. [PDF]

open access: yesNat Astron
Ballouz RL   +6 more
europepmc   +1 more source

Effects of temperature and confinement mechanisms on the deformation of selective laser melting 3D printed SS316 using finite element analysis. [PDF]

open access: yesSci Rep
Saxena A   +10 more
europepmc   +1 more source

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