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(Article of periodic en Anglais - 2012)

Document title

Post-glacial range of variability in the Conejos River Valley, southern Colorado, USA : fluvial response to climate change and sediment supply

Authors(s) and Affiliation(s)

LAYZELL A.L. (1 2) ; CARY EPPES M. (2) ; JOHNSON B.G. (2 3) ; DIEMER J.A. (2) ;
(1) Univ. of Kansas, Lawrence, ETATS-UNIS
(2) Univ. of North Carolina, Charlotte, ETATS-UNIS
(3) College, NC, Davidson, ETATS-UNIS

Abstract

The AA. examine the natural range of variability in the Conejos River Valley, southern Colorado, through documentation of terrace morphostratigraphic and sedimentological characteristics as well as through investigation of sediment contributions from headwaters, hillslopes and tributary streams. Additionally, soil development and radiocarbon ages, together with local and regional paleoclimate reconstructions, were used to infer the range of processes acting in this system. The AA. discuss the potential for increases in sediment supply during periods of (1) para-glacial adjustment, (2) climatic cooling, (3) increased frequency of climate change and (4) increased fire frequency or severity. They also consider the effects of changes in stream discharge and extreme storm occurrence. They conclude that combinations of these processes, operating at different times, have contributed to sediment mobilization since de-glaciation. Stream and landform morphology also varies longitudinally due to the influence of remnant glacial topography.

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2012, vol. 37, no11 [pp. 1189-1202]

Bibliographic references : 2 p.

Collation : 7 fig., 2 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3253

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2013
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