Results 41 to 50 of about 7,581 (228)

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

Permafrost and Periglacial Processes, EarlyView.
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

Biogeography of Micro-Eukaryotic Communities in Sediment of Thermokarst Lakes Are Jointly Controlled by Spatial, Climatic, and Physicochemical Factors Across the Qinghai-Tibet Plateau

Frontiers in Ecology and Evolution, 2022
Thermokarst lakes are formed following ice-rich permafrost thaw and widely distribute in the cold regions with high latitude and elevation. However, the micro-eukaryotic communities (MECs) in thermokarst lakes are not well studied.
Ze Ren, Ze Ren, Yitong Zhang, Xia Li, Xia Li, Cheng Zhang, Cheng Zhang   +6 more
doaj   +1 more source

Permafrost hydrology in changing climatic conditions: seasonal variability of stable isotope composition in rivers in discontinuous permafrost [PDF]

, 2015
Role of changing climatic conditions on permafrost degradation and hydrology was investigated in the transition zone between the tundra and forest ecotones at the boundary of continuous and discontinuous permafrost of the lower Yenisei River.
Nyland, Kelsey E., Opel, Thomas, Shiklomanov, Alexander I., Shiklomanov, Nikolay I., Streletskaya, Irina D., Streletskiy, Dmitry A., Tananaev, Nikita I., Tokarev, Igor   +7 more
core   +1 more source

Ice-rich (periglacial) vs icy (glacial) depressions in the Argyre region, Mars: a proposed cold-climate dichotomy of landforms [PDF]

, 2017
On Mars, so-called “scalloped depressions” are widely observed in Utopia Planitia (UP) and Malea Planum (MP). Typically, they are rimless, metres- to decametres-deep, incised sharply, tiered inwardly, polygonised and sometimes pitted.
Bandfield, Banks, Benn, Betterton, Black, Byrne, C. Gallagher, Costard, Dallimore, Dauber, Dohm, Dundas, El-Maarry, Forget, French, Grosse, Haberle, Harris, Head, Head, Hecht, Herzfeld, Hill, Hopkins, J.M. Dohm, Johnsson, Kääb, Lachenbruch, Lefort, Lefort, Levy, Mackay, Mackay, Mackay, Madeleine, Madeleine, Mangold, Mangold, Massé, Mellon, Milliken, Mitchell, Morgenstern, Murton, Mustard, Paul, Penner, R.J. Soare, Rampton, Reynolds, S.J. Conway, Schirrmeister, Schirrmeister, Schorghofer, Seibert, Sizemore, Soare, Soare, Soare, Soare, Soare, Soare, Soare, Séjourné, Séjourné, Séjourné, Ulrich, Wan Bun Tseung, Washburn, Williams, Willmes, Zanetti, Zent   +72 more
core   +2 more sources

Assessing the Vulnerability of an Inuit Archaeological Site in a Changing Periglacial Environment: A Novel Multimethod Geophysical Approach in Arctic Geoarchaeology

Archaeometry, EarlyView.
ABSTRACT With northern regions warming at twice the global rate, assessing the state of archaeological sites in these areas is critically important. In this study, we used a multimethod geophysical approach (ERT, GPR, and EMI) to characterize the current geocryological conditions of an Inuit archaeological site on South Aulatsivik Island (Labrador ...
Rachel Labrie, Dominique Todisco, Najat Bhiry, Cécile Finco, Héloïg Barbel Le Page, Armelle Couillet   +5 more
wiley   +1 more source

GeoTechnical Investigations for the Dalton Highway Innovation Project As A Case Study of the Ice-Rich Syngenetic Permafrost [PDF]

, 2010
INE/AUTC 11 ...
Dillon, Matthew, Kanevskiy, Mikhail, O’Donnell, Jonathan, Shur, Yuri, Stephani, Eva   +4 more
core  

Satellite‐Based Detection of Methane Emissions From Permafrost Peatland Warming

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Column‐averaged methane (XCH4) observations spanning 2018–2023 by the Tropospheric Monitoring Instrument (TROPOMI) on the Sentinel‐5 Precursor satellite are assessed for evidence of methane (CH4) emissions from permafrost regions. Bi‐monthly TROPOMI XCH4 anomaly maps and soil temperature (Tsoil) anomaly maps from reanalysis data are generated ...
Ray Nassar, Qindii Shafi, Joseph Mendonca, Sabour Baray, Peter Morse, Oliver Schneising, Michael Buchwitz, Ama Gamage   +7 more
wiley   +1 more source

Impact Assessment And Stochastic Modeling Of Morphometric Parameters Of Thermokarst Hazard For Unpaved Roads

Geography, Environment, Sustainability, 2020
Active construction of new roads and other linear structures requires new techniques for the natural hazard assessment. These techniques can involve both stochastic modeling and remote sensing data (RSD).
Timofey V. Orlov, Aleksey S. Victorov, Maria V. Arkhipova, Andrey V. Zverev   +3 more
doaj   +1 more source

Modelling the Sensitivity of Yukon River Biogeochemical Dynamics to Environmental and Chemical Drivers: Implications for Dissolved Organic Carbon

Hydrological Processes, Volume 40, Issue 4, April 2026.
We present a novel, process‐based, river model that effectively captures the interplay among hydrological, chemical, and soil parameters shaping riverine DOC transformations and reproduces observed DOC concentrations in the Yukon River. Sensitivity analysis highlights the importance of understanding the variability in DOC entering the headwater from ...
Amadini M. Jayasinghe, Georgina A. Gibson, Nicole Jeffery, Jaclyn Clement Kinney, Anastasia Piliouras   +4 more
wiley   +1 more source

RISK ASSESSMENT BASED ON MATHEMATICAL MORPHOLOGY OF LANDSCAPE MODELS (CASE STUDY OF THERMOKARST PLAINS)

Geography, Environment, Sustainability, 2013
The paper presents a new approach for risk assessment of impact of thermokarst processes on engineering structures; it is based on the methods of mathematical morphology of landscape.
Alexey Victorov, Veronika Kapralova
doaj   +1 more source