Results 41 to 50 of about 131,649 (218)

Stable isotope analysis of freshwater gastropod carbonates from Swanscombe: Insights into climate stability and seasonality during MIS 11c

Journal of Quaternary Science, EarlyView.
ABSTRACT Stable isotope analyses of freshwater mollusc carbonate can record environmental conditions at the time of mineralisation, yet this technique remains underused in British Middle Pleistocene fluvial sequences, despite the abundance of fossil shell material in these deposits.
Jennifer E. Sherriff, Ian Candy, Adrian P. Palmer, Danielle C. Schreve, Tom S. White   +4 more
wiley   +1 more source

New Schmidt hammer exposure‐age dating calibrations for the Last Glacial Termination in NW Scotland: Development and application to undated Torridon Group sandstone surfaces in Wester Ross

Journal of Quaternary Science, EarlyView.
ABSTRACT An understanding of the terrestrial extent, retreat dynamics and climate–glacier coupling of ice masses during the Last Glacial Termination (LGT, ~18–11 ka) is often limited by a fragmentary geomorphological record and is dependent on precise, accurate and robust dating frameworks.
Alastair M. Curry, David Small, Oliver T. Bartlett, Jonathan Newitt   +3 more
wiley   +1 more source

Geomorphometric delineation of floodplains and terraces from objectively defined topographic thresholds [PDF]

Earth Surface Dynamics, 2017
Floodplain and terrace features can provide information about current and past fluvial processes, including channel response to varying discharge and sediment flux, sediment storage, and the climatic or tectonic history of a catchment.
F. J. Clubb, S. M. Mudd, D. T. Milodowski, D. A. Valters, L. J. Slater, M. D. Hurst, A. B. Limaye   +6 more
doaj   +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

Pedogenesis of Fluvial Terrace Soils Related to Geomorphic Processes in Central Taiwan

Land, 2023
Pedogenetic features of the soils could be a proxy for revealing the landform surface processes. Our work first analyzed the particle size distributions and lithological discontinuities (LDs) of the soils in the midstream of the Zoushui River, central ...
Wen-Shu Huang, Chi-Shu Liang, Heng Tsai, Zeng-Yi Hseu, Shiuh-Tsuen Huang   +4 more
doaj   +1 more source

A Macroinvertebrate‐Based Flow Index Elucidates Responses to Environmental Water in a Highly Regulated River

River Research and Applications, EarlyView.
ABSTRACT Macroinvertebrate‐based flow indices have potential application to guiding environmental flow allocations and monitoring their effectiveness, but their sensitivity to such flows has seldom been tested. We examined the response of the Australian Macroinvertebrate Flow Index (AMFI), calculated from family‐level data, to three stages of ...
Bruce C. Chessman, Andrew J. Brooks, Daniel W. Coleman, Matthew D. Russell   +3 more
wiley   +1 more source

Testing fluvial erosion models using the transient response of bedrock rivers to tectonic forcing in the Apennines, Italy [PDF]

, 2011
The transient response of bedrock rivers to a drop in base level can be used to discriminate between competing fluvial erosion models. However, some recent studies of bedrock erosion conclude that transient river long profiles can be approximately ...
Roberts, Gerald P., G. E. Tucker, Attal, M., Roberts, G.P., D. Hobley, Cowie, P. A., Roberts, G. P., A. C. Whittaker, Whittaker, A.C., M. Attal, G. P. Roberts, P. A. Cowie, Cowie, P.A., Hobley, Daniel, Attal, M.; id_orcid, Whittaker, A. C., Tucker, G. E., Hobley, D., Tucker, G.E.   +18 more
core   +1 more source

A revised terrace stratigraphy and chronology for the Little Ouse River as a framework for interpreting the late Lower and early Middle Palaeolithic of central East Anglia, UK

Quaternary Environments and Humans
The Breckland of central East Anglia has a Pleistocene geological sequence spanning c. 1 million years, providing a framework for assessing changes in human technology and behaviour within a single changing palaeolandscape.
Rob Davis, Simon G. Lewis, Marcus Hatch, Nick Ashton, Pierre Voinchet, Jean-Jacques Bahain, Luke Dale, Frederick Foulds, Aaron Rawlinson, Mark White   +9 more
doaj   +1 more source

Morphostratigraphy of river terraces in the Eger valley (Czechia) focused on the Smrčiny Mountains, the Chebská pánev Basin and the Sokolovská pánev Basin

Acta Universitatis Carolinae Geographica, 2019
The Eger (Ohře) River terraces originated in varied morphotectonic and climate-morphogenetic conditions that existed during the late Cenozoic evolution of the western part of the Bohemian Massif.
Břetislav Balatka, Jan Kalvoda, Tereza Steklá, Petra Štěpančíková   +3 more
doaj   +1 more source

Vulnerability to Dams of the Last Undammed Large Rivers of Southeast Asia

River Research and Applications, EarlyView.
ABSTRACT The vast majority of large Eurasian rivers are regulated by hydropower dams, but some have survived as free‐flowing rivers so far in the Arctic and along stretches of the Myanmar coast. There, the Ayeyarwady (Irrawaddy) and Salween Rivers, two of the largest rivers of Southeast Asia, provide a huge amount of sediment, nurturing floodplains and
Gruel Charles‐Robin, Latrubesse Edgardo Manuel   +1 more
wiley   +1 more source