Expeditionary studies in the western basin of the Aral Sea in September 2006

Zav’yalov, P. O.; Andrulionis, E. E.; Арашкевич, Е. Г.; Grabovskii, A. B.; Dikarev, S. N.; Kudyshkin, T. V.; Kurbaniyazov, A. K.; Ni, Anatoli; Сапожников, Ф. В.

doi:10.1134/s0001437008040152

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…The field data analyzed to support the numerical simulations were recorded during two field campaigns (27-30 September 2006 and 29 October-3 November 2013) described in detail by Zavialov et al (2008) and Izhitskiy et al (2014b), respectively. Figure 1 presents the shorelines of the South Aral in 2006 and 2013 together with the bathymetric levels for 2013, when the sea surface level decreased by 3.2 m. The shoreline has mainly receded along the eastern shore, where the lake is shallower.…”

Section: Site and Measurementsmentioning

confidence: 99%

The internal seiche field in the changing South Aral Sea (2006–2013)

Roget

Khimchenko

Forcat

et al. 2017

Hydrol. Earth Syst. Sci.

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Abstract. Internal standing waves (seiches) in the South Aral Sea are studied for the first time. The study, based on numerical simulations and field data, focuses on two different campaigns: the first in autumn 2006, when the stratification was weak and there was a mild prevailing northeasterly wind, and the second in autumn 2013, when the stratification was strong and there was a mild easterly wind. Between these two campaigns, the sea surface level decreased by 3.2 m. The periods of the fundamental modes were identified as 36 and 14 h, respectively. In both years, either second or third vertical modes were found. In general, the vertical modes in 2013 were higher because of the broad and strong pycnocline. For both years, it was found that the deep quasi-homogeneous mixed upper layer could sustain internal waves under mild wind conditions. The observed first and second vertical modes in 2006 are the first and second horizontal modes and the second and third vertical modes in 2013 are the second and third horizontal modes. The results suggest that, due to sea level variations, the neck connecting the Chernyshev Bay to the main body of the lake can become a critical location for the development of a nodal line for all principal oscillation modes. Rotation effects on waves were not analyzed in this study.

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Section: Site and Measurementsmentioning

confidence: 99%

The internal seiche field in the changing South Aral Sea (2006–2013)

Roget

Khimchenko

Forcat

et al. 2017

Hydrol. Earth Syst. Sci.

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“…A comprehensive collection of available data for the period of 2002-2021 on morphometric parameters and salinity for the western basin of the Large Aral Sea has been provided by Ginzburg et al [48]. The time series consists of 16 epochs of salinity data based on data sources described in [41,42,[49][50][51][52][53][54][55][56][57].…”

Section: Methodsmentioning

confidence: 99%

Water Density Variations of the Aral Sea from GRACE and GRACE-FO Monthly Solutions

Földváry

Abdelmohsen

Ambrus

2023

Water

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The Gravity Recovery and Climate Experiment (GRACE) and its successor, the GRACE Follow-On (GRACE-FO) gravity satellite missions, have been providing monthly gravity field solutions for almost 20 years, enabling a unique opportunity to monitor large-scale mass variation processes. The gravity anomaly time series for the Aral Sea region has been obtained for the period of April 2002 to January 2022. The method of determining the gravity anomaly time series from GRACE and GRACE-FO monthly solutions has been improved by considering the mass variations of the Caspian Sea. The gravity anomaly time series was then compared to water mass changes determined by considering variations in the salinity and temperature of seawater. Nevertheless, the tests suggest that improvements in correlation with such information might occur, although the relevance of the improvement should not be overestimated. All in all, it can be demonstrated that salinity changes relevantly influence the gravity field; however, the signal is too weak to inversely obtain information from satellite-borne gravity observations on salinity variations.

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“…The increase in the salinity of the Aral Sea waters led to further changes in its ion-salt composition. The proportion of divalent ions decreased due to the sequential precipitation of calcium carbonate, magnesium carbonate, gypsum, mirabilite, and halite (Bortnik and Chistyayeva 1990 ; Zavialov et al 2012 ).…”

Section: Changes In Water Level and Chemistry Of The Aral Seamentioning

confidence: 99%

“…Salinity of the deep-water Western basin exceeded 100‰. The Eastern basin became a shallow water body and its salinity could now exceed as much as 200‰ (Aladin and Plotnikov 2008 ; Zavialov et al 2012 ).…”

Section: Changes In Water Level and Chemistry Of The Aral Seamentioning

confidence: 99%

The zoocenosis of the Aral Sea: six decades of fast-paced change

Аладин

Gontar

Жакова

et al. 2018

Environ Sci Pollut Res

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During the last six decades, the water level of the Aral Sea, once one of the largest lakes in the world, has experienced a major human-driven regression followed by significant changes in salinity. These fast-paced alterations were initiated by the diversion of two rivers—the Amu Darya and Syr Darya—key players in the regulation of the water balance of the Aral Sea. Consequently, biological modifications took place leading to severe changes of the zoocenosis. This paper reviews the changes that have affected communities of fish and aquatic invertebrates in the Aral Sea since the 1950s. The reported alterations in biodiversity not only represent a natural response to a decrease in water level and a subsequent increase in salinity but also effects of non-native species introduction. The future prospects for invertebrates and fish in the Aral Sea, assuming that initiated restoration work is continued, are also discussed in this paper.

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Expeditionary studies in the western basin of the Aral Sea in September 2006

Cited by 5 publications

References 3 publications

The internal seiche field in the changing South Aral Sea (2006–2013)

The internal seiche field in the changing South Aral Sea (2006–2013)

Water Density Variations of the Aral Sea from GRACE and GRACE-FO Monthly Solutions

The zoocenosis of the Aral Sea: six decades of fast-paced change

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