Lateral erosion of the Sacramento River, California
(1942–1999), and responses of channel and floodplain lake to
human influences

J 2011

Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences

ŠULC MICHALKOVÁ, Monika; Hervé PIÉGAY; G. M. KONDOLF a S. E. GRECO

Základní údaje

Originální název

Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences

Autoři

ŠULC MICHALKOVÁ, Monika; Hervé PIÉGAY; G. M. KONDOLF a S. E. GRECO

Vydání

Earth Surface Processes and Landforms, 2011, 0197-9337

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

Zemský magnetismus, geodesie, geografie

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 2.432

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1002/esp.2106

UT WoS

000287154000010

Klíčová slova anglicky

BANK EROSION; MEANDERING RIVER; AIN RIVER; VEGETATION; FRANCE; USA; CONSERVATION; COMPLEXITY; ADJUSTMENT; MANAGEMENT

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 3. 2013 13:01, Mgr. Monika Šulc Michalková, Ph.D. et Ph.D.

Anotace

V originále

This study focused on a spatial and temporal analysis of the active channel and associated floodplain lakes using aerial photographs spanning five decades (1942, 1962, 1985, 1999) over a 140 km long reach of the Sacramento. Planimetric changes were analysed longitudinally and temporally to highlight the spatial structures and their evolution through time. The results underline complex changes and space-time pattern in bank erosion, channel length and active channel width. The bank erosion and also channel lengthening were higher between 1962 and 1985 than in the two periods studied before and after. Active channel width significantly decreased from 1942 to 1999; partly progressively from upstream to downstream with local widening whatever the studied periods. Similarly the floodplain lakes observed before 1942-1962 were significantly different in size and geometry from those which appeared during the most recent period. The creation of lakes is less frequent after the 1940s, with a secondary peak of occurrence during the 1962-1985 period. The interpretation of these changes is complex because of various human pressures acting over different time scales (bank protection, flow diversion, sediment starvation, land-use changes) and various natural influences (flood sequences through out the period, geological setting). The findings are discussed by comparison with previous work, and highlight the important effect of dam impact on peak flow and sediment starvation modifying longitudinally hydraulic conditions within the channel, but also the increase in riprap protection which induced change in bank erosion, channel planimetry and floodplain lake characters (geometry, frequency of renewal). Variation in flood intensities is also observed as having positive effects on the bank erosion pattern. Secondarily, land-use changes also controlled bank erosion intensity. Copyright (C) 2010 John Wiley & Sons, Ltd.

Citovat

ŠULC MICHALKOVÁ, Monika; Hervé PIÉGAY; G. M. KONDOLF a S. E. GRECO. Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences. Earth Surface Processes and Landforms. 2011, roč. 36, č. 2, s. 257–272, 15 s. ISSN 0197-9337. Dostupné z: https://doi.org/10.1002/esp.2106.

@article{1076414,
   author = {Šulc Michalková, Monika and Piégay, Hervé and Kondolf, G. M. and Greco, S. E.},
   article_number = {2},
   doi = {https://doi.org/10.1002/esp.2106},
   keywords = {BANK EROSION; MEANDERING RIVER; AIN RIVER; VEGETATION; FRANCE; USA; CONSERVATION; COMPLEXITY; ADJUSTMENT; MANAGEMENT},
   language = {eng},
   issn = {0197-9337},
   journal = {Earth Surface Processes and Landforms},
   title = {Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences},
   volume = {36},
   year = {2011}
}

TY  - JOUR
ID  - 1076414
AU  - Šulc Michalková, Monika - Piégay, Hervé - Kondolf, G. M. - Greco, S. E.
PY  - 2011
TI  - Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences
JF  - Earth Surface Processes and Landforms
VL  - 36
IS  - 2
SP  - 257–272
EP  - 257–272
SN  - 01979337
KW  - BANK EROSION
KW  - MEANDERING RIVER
KW  - AIN RIVER
KW  - VEGETATION
KW  - FRANCE
KW  - USA
KW  - CONSERVATION
KW  - COMPLEXITY
KW  - ADJUSTMENT
KW  - MANAGEMENT
N2  - This study focused on a spatial and temporal analysis of the active channel and associated floodplain lakes using aerial photographs spanning five decades (1942, 1962, 1985, 1999) over a 140 km long reach of the Sacramento. Planimetric changes were analysed longitudinally and temporally to highlight the spatial structures and their evolution through time. The results underline complex changes and space-time pattern in bank erosion, channel length and active channel width. The bank erosion and also channel lengthening were higher between 1962 and 1985 than in the two periods studied before and after. Active channel width significantly decreased from 1942 to 1999; partly progressively from upstream to downstream with local widening whatever the studied periods. Similarly the floodplain lakes observed before 1942-1962 were significantly different in size and geometry from those which appeared during the most recent period. The creation of lakes is less frequent after the 1940s, with a secondary peak of occurrence during the 1962-1985 period. The interpretation of these changes is complex because of various human pressures acting over different time scales (bank protection, flow diversion, sediment starvation, land-use changes) and various natural influences (flood sequences through out the period, geological setting). The findings are discussed by comparison with previous work, and highlight the important effect of dam impact on peak flow and sediment starvation modifying longitudinally hydraulic conditions within the channel, but also the increase in riprap protection which induced change in bank erosion, channel planimetry and floodplain lake characters (geometry, frequency of renewal). Variation in flood intensities is also observed as having positive effects on the bank erosion pattern. Secondarily, land-use changes also controlled bank erosion intensity. Copyright (C) 2010 John Wiley & Sons, Ltd.
ER  -

ŠULC MICHALKOVÁ, Monika; Hervé PIÉGAY; G. M. KONDOLF a S. E. GRECO. Lateral erosion of the Sacramento River, California (1942–1999), and responses of channel and floodplain lake to human influences. \textit{Earth Surface Processes and Landforms}. 2011, roč.~36, č.~2, s.~257–272, 15 s. ISSN~0197-9337. Dostupné z: https://doi.org/10.1002/esp.2106.

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