Results 191 to 200 of about 38,380 (249)

Quantifying the Surface Deformation of Pingos on the Alaskan North Slope Using Interferometric Synthetic Aperture Radar (InSAR)

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 682-691, October/December 2026.
ABSTRACT Pingos are large mounds with cores formed of intrusive ice that form in periglacial landscapes. These ice structures can form in regions of discontinuous permafrost, commonly as hydraulic or open‐system pingos, or in locations of continuous permafrost, commonly as hydrostatic or closed‐system pingos.
Venezia M. Follingstad, Roger J. Michaelides, Matthew R. Siegfried, Tyler M. Meng, John Bradford, Kynan H. G. Hughson, Alexia R. Kubas, Andrew Mullen, Enrica Quartini, Austin Routt, Hanna G. Sizemore, Andrei Swidinsky, Britney E. Schmidt   +12 more
wiley   +1 more source

Nitrogen Isotopic Composition of Crude Oils from the Dongpu Depression, Bohai Bay Basin, Eastern China: Implications for Sedimentary Redox Conditions and Oil-Source Correlation. [PDF]

ACS Omega
Chen J, Chen J, Yao L, Shi S, Zhu L, Song Z, Cao X.   +6 more
europepmc   +1 more source

Electrical Resistivity Tomography for the 2D and 3D Investigation of Pingos and Permafrost Mounds in Northern Canada's Mountain and Coastland Areas

Permafrost and Periglacial Processes, Volume 37, Issue 4, Page 804-829, October/December 2026.
ABSTRACT Pingos and related permafrost mounds are widespread periglacial landforms in Arctic environments that are ice‐rich on the one hand and contain taliks on the other, making them vulnerable to climate change. So far, the interior, geophysical characteristics, and distribution of ground ice within these dome‐ or cone‐shaped features have not been ...
Tim Wiegand, Julius Kunz, Christof Kneisel   +2 more
wiley   +1 more source

U-Pb dating of volcaniclastic deposits from the Sinj Basin: implications for provenance and the tectono-sedimentary evolution of the External Dinarides. [PDF]

Int J Earth Sci
Šamarija R, Andrić-Tomašević N, Mandic O, Zeh A, Mužek K, Pavelić D, Schwotzer M.   +6 more
europepmc   +1 more source

NH4‐Smectites as Potential Precursors of Nitrogen Compounds Evolved During Analyses by the Sample Analysis at Mars (SAM) Instrument on the Curiosity Rover

Journal of Geophysical Research: Planets, Volume 131, Issue 10, October 2026.
Abstract Ammonium (NH4+) in the interlayer space of phyllosilicates has been proposed as a potential but underexplored nitrogen reservoir on Mars. We synthesized ammonium‐exchanged smectites (montmorillonite SWy‐2 and nontronite NAu‐2) and analyzed them, both as pure phases and in mixtures containing five or 20 wt.% magnesium (Mg) perchlorate, under ...
S. Andrejkovičová, A. C. McAdam, J. C. Stern, M. Millan, R. Navarro‐González, C. A. Knudson, S. T. Wieman, E. B. Rampe, D. W. Ming, C. N. Achilles, S. S. Johnson, F. Rocha, C. A. Malespin, P. R. Mahaffy   +13 more
wiley   +1 more source

Fluvially Sourced Sediment Supply and Climate Modulate Morphodynamics and State Transitions in Bistable Aeolian Dunefields

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Alternative stable state theory in aeolian geomorphology describes the occurrence of bare and vegetated aeolian dunes in response to long‐term climatic and ecological drivers. Transitions between states, as well as their co‐occurrence (bistability), can arise from perturbations to drivers, disturbance, and associated biophysical feedbacks ...
Joshua Caster, Joel B. Sankey, Temuulen Sankey, Taylor Joyal, Matthew A. Bowker   +4 more
wiley   +1 more source

Petroleomics FT-ICR MS Data Processing Methods for Inter-Basin Discrimination of Lacustrine Oils From Two Brazilian Pre-Salt Basins. [PDF]

J Mass Spectrom
Oliveira LFC, Melendez-Perez JJ, Lutzer SEBM, Sussulini A, Eberlin MN.   +4 more
europepmc   +1 more source

Organic Matter Dynamics and Biogeochemical Signatures in Lakes From the Prairies to Tundra in Western Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Climate‐driven poleward shifts of terrestrial ecosystems are expected to alter organic matter inputs and biogeochemical processes in northern lakes. In regions lacking long‐term observations, latitudinal gradients provide valuable space‐for‐time substitutions for predicting these changes.
Vilmantas Prėskienis, E. Henriikka Kivilä, Matthew J. Bogard, Dënë Cheecham‐Uhrich, Jules M. Blais, Milla Rautio   +5 more
wiley   +1 more source

The impact of ²²²Radon escape on ²¹⁰Pb-based sediment chronology and dating accuracy in lacustrine systems. [PDF]

Sci Rep
Begy RC, Bozsik A, Korponai J, Magyari EK, Kovács T.   +4 more
europepmc   +1 more source

Estimating River Suspended Sediment Concentrations From Sentinel‐2: Expanding the Training Set and Applicability to Multi‐Dammed Systems

Water Resources Research, Volume 62, Issue 10, October 2026.
Abstract In situ measurements of riverine suspended sediment concentrations (SSC) are often sparse, limiting assessment of important patterns in space and changes in time. SSC measurements based on satellite data are a potential solution to this limitation, but training algorithms to estimate SSC from satellite data also requires substantial in situ ...
Ilan Valencius, Evan Dethier, Christopher Sheehan, Noah Snyder   +3 more
wiley   +1 more source