Results 11 to 20 of about 85 (79)

Modeled Subsidence of Permafrost Terrain 2025–2050: North‐Central Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT A large fraction of the Alaska terrain is underlain by regolith that contains excess ice (ice that in volume exceeds the natural pore space). Possible loss of excess ice would lead to ground subsidence, which in turn would disturb and destabilize the ground surface.
Jaakko Putkonen, Hayden Patterson, Robert Chance, Mary Soaper, Anai Caparó Bellido, Aymane Ahajjam, Andrew Wilcox, Sheridan Parker, Timothy Pasch   +8 more
wiley   +1 more source

Imaging Near‐Surface Bedrock Fracturing and Fluid Pathways Using Seismic Attenuation and Velocity From Viscoacoustic Full‐Waveform Inversion of Refraction Data

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract Seismic attenuation provides sensitivity to fracture density, fluid saturation, and pore geometry that complements velocity, enabling quantitative imaging of fracture architecture and associated fluid‐pathways in near‐surface bedrock. Yet high‐resolution attenuation models remain rare in refraction studies due to amplitude‐fidelity and ...
Donggeon Kim, Guangchi Xing, Tieyuan Zhu
wiley   +1 more source

Super‐Resolution of Planetary Images Based on Generative Adversarial Network

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Currently, satellite imagery serves as the primary means of observing terrestrial planets such as the Mars, the Moon, and Mercury. Enhancing the resolution and quality of these images can provide more detailed insights into planetary surfaces. However, improvements in image quality are often limited by the constraints of sensor technology and ...
Xiaoran Zhang, Yiran Wang, Miao Zhuo
wiley   +1 more source

The Age and Origin of Block Deposits in the Victorian Alps, Australia

Permafrost and Periglacial Processes, Volume 37, Issue 3, Page 391-415, July/September 2026.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows, Michelle S. Worland, Julian Murton, Stephanie C. Mills, L. Keith Fifield   +4 more
wiley   +1 more source

Surface Geology and Evolution of Asteroid Ryugu: Insights From Hayabusa2 Global Mapping

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract Rubble‐pile asteroids, characterized by loose aggregates of debris held together by gravity, represent both a significant planetary hazard and a key to understanding planetesimal formation. Geologic mapping of these bodies provides essential insights into their origins, evolution, and surface processes.
Lisa M. Vincent, Trishit Ruj, Goro Komatsu, Aditya Ray, Hiroshi Kikuchi, Ryodo Hemmi, Hideaki Miyamoto, Seiji Sugita, the Hayabusa2 ONC science team   +8 more
wiley   +1 more source

Groundwater Connectivity and Buffering in Western Australian Hypersaline Lakes: Implications for Late‐Stage Martian Lacustrine Systems

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract Thousands of saline to hypersaline lakes exist across the Yilgarn Craton in Western Australia, representing potential Mars analogs with diverse and varying salinity, pH, and oxygen conditions that remain poorly constrained. Here, we report geochemical trends in lake waters that vary across wet‐dry cycles as well as with regional location and ...
T. A. Plattner, B. E. Schmidt, N. M. Fernandez, P. T. Doran, M. A. Birmingham, J. M. Weber, A. Celestian, E. D. Ingall, J. S. Bowman, S. M. Som, A. Odenheimer, T. Bornholdt, C. Sephus, H. T. Jamison, K. Russo, S. Buessecker, L. A. Fisher, B. Klempay, E. R. Paris, E. J. Skoog, M. M. Weng, C. Pozarycki, A. T. Schartup, C. E. Carr, J. J. Wray, F. Rivera‐Hernández, E. Quartini   +26 more
wiley   +1 more source

Geology and Chronology of the Lunar Taruntius Crater: Implications for the Retention Age of Lunar Ray Patterns and Lifetime of Lunar Explosive Volcanism

Earth and Space Science, Volume 13, Issue 7, July 2026.
Abstract The Taruntius crater, situated between Maria Fecunditatis, Crisium, and Tranquillitatis, is characterized by a prominent bright ray system and a floor‐fractured morphology and has long been interpreted as a relatively young Eratosthenian or Copernican crater.
Longjiao Yu, Haijun Cao, Le Qiao, Zongcheng Ling   +3 more
wiley   +1 more source

Stratigraphy Preserved on the Jezero Crater Rim Reveals Repeated Impacts on Early Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract The outer slopes of the western Jezero crater rim are hypothesized to expose sections of Early‐ to Pre‐Noachian crust uplifted by the Jezero impact, providing an excellent opportunity to investigate the earliest geologic processes active on terrestrial planets.
Alexander J. Jones, Sanjeev Gupta, Robert Barnes, Samantha Gwizd, Kathryn M. Stack, Briony Horgan, Sanna Alwmark, Athanasios Klidaras, Eleni Ravanis, Sarah Fagents, Gerhard Paar, James F. Bell III, Justin N. Maki, Margaret Deahn, Candice Bedford, Nicolas Mangold, Michael Bramble, Justin I. Simon, Lisa Mayhew, Cathy Quantin‐Nataf, Larry Crumpler, Christoph Traxler, Chris Herd, Olivier Beyssac, Nicolas Randazzo, Uni Árting, Roger C. Wiens, Kenneth A. Farley   +27 more
wiley   +1 more source

Degradation of Rustic Canyon Crater in Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract The Rustic Canyon crater is a degraded impact structure on Mt. Sharp in Gale crater. The crater is irregular in plan form, ∼20 m across NW‐SE and ∼30 m across NE‐SW and lacks a raised rim. Using images and a Digital Terrain Model derived from a rover orthomosaic of the crater, we evaluated the amount and processes of degradation based on ...
J. A. Grant, S. A. Wilson, M. A. Cowart, C. M. Weitz, M. E. Hoffman, T. Kubacki, N. Milling, C. Juarez, F. J. Calef III, L. M. Thompson   +9 more
wiley   +1 more source

Loess Studies in Aotearoa New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 2, June 2026.
Loess in Aotearoa New Zealand (ANZ) has been studied since its first documented recognition (on Banks Peninsula) in 1878 by Julius von Haast. A decade later, John Hardcastle revealed that southern ANZ loess was both glacial in origin and contained signals of past climates.
Brent V. Alloway, David J. Lowe, Bradley J. Pillans, Peter C. Almond, Alan S. Palmer   +4 more
wiley   +1 more source