Holocene vegetation history and sea level changes in the SE corner of the Caspian Sea: relevance to SW Asia climate

Leroy, Suzanne A.G.; Kakroodi, A.A.; Kroonenberg, S.B.; Lahijani, Hamid; Alimohammadian, Habib; Nigarov, Aman

doi:10.1016/j.quascirev.2013.03.004

Cited by 106 publications

(75 citation statements)

References 44 publications

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“…Regarding the signs of the CSL rise and brackish water invasion in the Langarud wetland, similar assemblages of dinocysts have been found in coastal lagoons such as Anzali Lagoon at present and in the past, as well as in Amirkola Lagoon in the LIA and in the open sea (Leroy et al, , 2013a(Leroy et al, , 2013b. The presence of these dinocysts clearly indicates an intermittent marine influence to the water body.…”

Section: Brackish Water Invasion: Impacts Causes and Comparison To Osupporting

confidence: 63%

An early ‘Little Ice Age’ brackish water invasion along the south coast of the Caspian Sea (sediment of Langarud wetland) and its wider impacts on environment and people

et al. 2015

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Caspian Sea level has undergone significant changes through time with major impacts not only on the surrounding coasts but also on offshore. This study reports a brackish water invasion on the southern coast of the Caspian Sea constructed from a multi-proxy analysis of sediment retrieved from the Langarud wetland. The ground surface level of wetland is >6 m higher than the current Caspian Sea level (at −27.41 m in 2014) and located >11 km far from the coast. A sequence covering the last millennium was dated by three radiocarbon dates. The results from this new study suggest that Caspian Sea level rose up to at least −21.44 m (i.e. >6 m above the present water level) during the early 'Little Ice Age'. Although previous studies in the southern coast of the Caspian Sea have detected a high-stand during the Little Ice Age period, this study presents the first evidence that this high-stand reached so far inland and at such a high altitude. Moreover, it confirms one of the very few earlier estimates of a high-stand at −21 m for the second half of the 14th century. The effects of this large-scale brackish water invasion on soil properties would have caused severe disruption to regional agriculture, thereby destabilising local dynasties and facilitating a rapid Turko-Mongol expansion of Tamerlane's armies from the east.

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Section: Brackish Water Invasion: Impacts Causes and Comparison To Osupporting

confidence: 63%

An early ‘Little Ice Age’ brackish water invasion along the south coast of the Caspian Sea (sediment of Langarud wetland) and its wider impacts on environment and people

et al. 2015

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“…The chronology was based on shell dating because: (1) the shells are the most abundant material in the cores for dating; (2) by choosing articulated shells, the risk of transporting and reworking is minimal; (3) of the possibility to compare the dating results with previous works such as Rychagov (1997), Karpychev (1998Karpychev ( , 2001, Lahijani et al (2009), Leroy et al (2011Leroy et al ( , 2013 and other researchers who mostly dated the sea-level changes based on shell chronology; finally (4) of the possibility to correct for the RE by using the Marine09 curve with an appropriate regional correction R when calibrating the age of marine samples. Since the CS is not connected to the global ocean and turns over annually, it is unclear whether it is more appropriate to use the atmospheric calibration curve (IntCal09) with the sample age corrected by subtracting RE and including the (Fedchina, 1980) and the sea-level curve from Komarova (1980) based on Russian cartographic maps.…”

Section: Radiocarbon Datingmentioning

confidence: 99%

Caspian sea-level changes during the last millennium: historical and geological evidence from the south Caspian Sea

et al. 2013

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Abstract. Historical literature may constitute a valuable source of information to reconstruct sea-level changes. Here, historical documents and geological records have been combined to reconstruct Caspian sea-level (CSL) changes during the last millennium. In addition to a comprehensive literature review, new data from two short sediment cores were obtained from the south-eastern Caspian coast to identify coastal change driven by water-level changes and to compare the results with other geological and historical findings. The overall results indicate a high-stand during the Little Ice Age, up to −21 m (and extra rises due to manmade river avulsion), with a −28 m low-stand during the Medieval Climate Anomaly, while presently the CSL stands at −26.5 m. A comparison of the CSL curve with other lake systems and proxy records suggests that the main sea-level oscillations are essentially paced by solar irradiance. Although the major controller of the long-term CSL changes is driven by climatological factors, the seismicity of the basin creates local changes in base level. These local base-level changes should be considered in any CSL reconstruction.

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“…Consequently, increasing attention has been paid to improving our understanding of the processes and possible mechanisms of climatic and environmental changes in ACA on various time-scales (e.g. Ding et al, 2002a;Frechen and Dodonov, 1998;Chen et al, 2006Chen et al, , 2008Chen et al, , 2010Holmes et al, 2009;Mischke et al, 2010;Huang et al, 2013;Leroy et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

A persistent Holocene wetting trend in arid central Asia, with wettest conditions in the late Holocene, revealed by multi-proxy analyses of loess-paleosol sequences in Xinjiang, China

Chen

Jia

Chen

et al. 2016

Quaternary Science Reviews

271

187

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Holocene vegetation history and sea level changes in the SE corner of the Caspian Sea: relevance to SW Asia climate

Cited by 106 publications

References 44 publications

An early ‘Little Ice Age’ brackish water invasion along the south coast of the Caspian Sea (sediment of Langarud wetland) and its wider impacts on environment and people

An early ‘Little Ice Age’ brackish water invasion along the south coast of the Caspian Sea (sediment of Langarud wetland) and its wider impacts on environment and people

Caspian sea-level changes during the last millennium: historical and geological evidence from the south Caspian Sea

A persistent Holocene wetting trend in arid central Asia, with wettest conditions in the late Holocene, revealed by multi-proxy analyses of loess-paleosol sequences in Xinjiang, China

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