Results 121 to 130 of about 306,213 (313)

Applications and Limitations of In-situ Cosmogenic Nuclides in Earth Sciences

Shuitu baochi yanjiu, 2005
Cosmogenic nuclide techniques have been used widely in various Earth science areas to measure surface exposure ages,burial events,and to reveal the style and rates of landscape evolution processes across a wide range of spatial and temporal scales.The ...
LI Ying-kui~1, Jon Harbor~1, LIU Geng-nian~2, ZHOU Li-ping~2, CUI Zhi-jiu~2   +4 more
doaj  

Glacial geomorphology and glacial history of the Muzart River valley, Tianshan Range, China

, 2010
The Muzart River originates on the southeastern slope of Tumur Peak, the largest center of modern glaciation in the Tianshan Range. Glacial landforms and sediments indicate that there are four major Quaternary glaciations in this drainage.
Wu, Min, Zhao, Jingdong, Song, Yougui, Liu, Shiyin, J. Wang, J.D. Zhao, Y.G. Song, J.W. King, King, John W., S.Y. Liu, M. Wu, Wang, Jie   +11 more
core   +1 more source

A review of glacial geomorphology and chronology in northern Spain: Timing and regional variability during the last glacial cycle [PDF]

, 2013
In this paper we synthesize the research in glacial geomorphology and geochronology in northern Spain, with special attention to the evidence of local glacier maximum extent earlier than the global LGM of MIS 2 (18-21. ka BP).
Valero-Garcés, Blas L., Farias Arquer, Pedro José, García-Ruiz, José María, Valcárcel, M., Farias, Pedro, Jiménez Sánchez, Montserrat, Moreno Caballud, Ana, García Ruiz, José María, Valcárcel, Marcos, Rodríguez Rodríguez, Laura, Domínguez-Cuesta, María José, Jiménez-Sánchez, Montserrat, Valero Garcés, Blas Lorenzo, Rico Herrero, María Teresa, Domínguez Cuesta, María José, Rodríguez-Rodríguez, Laura, Rico, María Teresa   +16 more
core   +1 more source

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

Disposition Model for Permafrost Degradation in Mountainous Regions

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost is a widespread thermal phenomenon in Arctic and high mountain regions that, in combination with steep terrain, exerts a key control on slope stability. Its degradation in response to climatic warming can modify the likelihood and timing of rockfall, debris flow and related mass movements. Robust information on the current state and
Peter Mani, Simon Allen, Mathias Bavay, Nils Hählen, Markus Stoffel   +4 more
wiley   +1 more source

Evaluating Testability of Permafrost Models Through Physical and Thermal Testing in Complex Mountain Terrain, Yukon, Canada

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Due to its subsurface nature, permafrost cannot be directly observed with the naked eye or optical remote sensing. Consequently, accurately describing its distribution and thermal state is challenging. This is especially true in vast, remote environments, where obtaining comprehensive field data is demanding or improbable.
Ria Nicholson, Philip P. Bonnaventure, Nick C. Noad, Madeleine C. Garibaldi, Rabecca Thiessen, Will Kochtitzky   +5 more
wiley   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source

Internal Structure, Kinematics, and Prehistory of Frozen Debris Lobe‐A (FDL‐A), Brooks Range, Alaska

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Frozen Debris Lobe‐A (FDL‐A)—one of hundreds of FDLs in the Brooks Range of northern Alaska—is a slow‐moving landslide in permafrost that has been the subject of research since 2008 due to its close proximity to the Dalton Highway. Here, we synthesize more than a decade's worth of climate and surface measurements of monitored FDLs, and the ...
Margaret M. Darrow, Esther L. Babcock, Ben A. Leshchinsky   +2 more
wiley   +1 more source

Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems

, 2017
This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shorelines ...
R. Storrar, S. Livingstone
semanticscholar   +1 more source

Internal Permafrost Structure of Geomorphologically Distinct Palsas in Northern Sweden Revealed by Quasi‐3D ERT

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost in northern peatlands occurs within individual palsas or extensive peat plateaus and controls local carbon storage. These permafrost landforms are complex, and their internal structure remains poorly understood. We used quasi‐3D electrical resistivity tomography (ERT) measurements, supported by UAV‐LiDAR topography, frost probing ...
Cas Renette, Mirko Pavoni, Mauricio Fuentes, Erik Sturkell, Mats Olvmo, Heather Reese   +5 more
wiley   +1 more source