Geomorphological investigations and luminescence dating in the southern part of the Khangay and the Valley of the Gobi Lakes (Central Mongolia)

Lehmkuhl, Frank; Lang, Andreas

doi:10.1002/1099-1417(200101)16:1<69::aid-jqs583>3.0.co;2-o

Cited by 92 publications

(55 citation statements)

References 35 publications

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“…High lakelevels Tarasov, 1996;Grunert et al, 2000;Komatsu et al, 2001;Lehmkuhl and Lang, 2001 Humid climate is interpreted from most Mongolian records, but the time varies from place to place Pollen Peck et al, 2002;Fowell et al, 2003Paleosols Feng, 2001Feng et al, 2005 9000 and 8500 yr BP. At the same time, planktonic diatoms increased in abundance from 5 to 45%.…”

Section: Humidmentioning

confidence: 99%

“…New evidence from central Mongolia (Lehmkuhl and Lang, 2001) and western Mongolia (Grunert et al, 2000;Tarasov et al, 2000) confirm major lake expansion during the early Holocene (Table 1). This climatic amelioration is also detected in pollen records (Dorofeyuk and Tarasov, 1998;Tarasov et al, 2000) and paleosols (Feng, 2001;Feng et al, 2005).…”

Section: Holocene Environmental Changes In Mongoliamentioning

confidence: 99%

“…By contrast, pollen records from Lake Telmen (Fowell et al, 2003) suggest, a high aridity index indicating that the prevailing climate was arid and Telmen was at a relative lowstand between 6100 and 4060 yr BP. Meanwhile in central Mongolia, lake levels declined (Komatsu et al, 2001;Lehmkuhl and Lang, 2001), and at Lake Juyanze, which is adjacent to south Mongolia, littoral sand-silt and fluvial sand deposits show that the lake was very shallow and shrinking in comparison to the preceding interval (Chen et al, 2003).…”

Section: Holocene Environmental Changes In Mongoliamentioning

confidence: 99%

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Holocene environmental changes in Mongolia: A review

Chen

Barton

2008

Global and Planetary Change

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Holocene environmental change in Mongolia is reconstructed on the basis of recently published paleoclimate records, including lake levels, pollen assemblages, and eolian sediment records. These data indicate that the early Holocene of Mongolia is characterized by increasing temperature and humidity. Paleosol development, high lake-stands, and a more southward distribution of forest-steppe environments suggest the early-mid Holocene was humid. The mid-Holocene however is characterized by enhanced aridity, even though the onset and termination of the dry interval differs from place to place. Finally, humidity increased again during the late Holocene, as evaporation decreased in concert with dropping temperatures in Mongolia.

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Section: Humidmentioning

confidence: 99%

Section: Holocene Environmental Changes In Mongoliamentioning

confidence: 99%

Section: Holocene Environmental Changes In Mongoliamentioning

confidence: 99%

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Holocene environmental changes in Mongolia: A review

Chen

Barton

2008

Global and Planetary Change

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“…Due to an absence of carbonate rocks in the Ugii Nuur catchment, the input of calcite derived from bedrock solution can be excluded. Yet, it was shown by Lehmkuhl and Lang (2001) and Grunert and Lehmkuhl (2004) that carbonatic loess-like deposition plays an important role in the sediment budget of the Mongolian steppe regions. Direct aeolian deposition in the lake and input of calcium carbonate or its solutes by removal of aeolian deposits by water erosion may be an important carbonate source for lacustrine carbonate precipitation.…”

Section: Interpretation Of Principal Componentsmentioning

confidence: 99%

Holocene climate evolution of the Ugii Nuur basin, Mongolia

2008

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In order to evaluate the Holocene palaeoenvironmental evolution of the Ugii Nuur basin, central Mongolia, investigations on chemical and mineralogical properties of lacustrine sediments were carried out on a 630 cm sediment core from lake Ugii Nuur. The interpretation of the record is based on a principal component analysis (PCA) of the elemental composition of the samples. The results show that lacustrine deposition started at 10.6 kyr BP. Low lake level conditions were identified during the Early Holocene (10.6-7.9 kyr BP). The Mid Holocene (7.9-4.2 kyr BP) was characterized by generally higher lake levels and thus higher moisture supply, but it experienced strong climatic fluctuations. Arid conditions prevailed from 4.2-2.8 kyr BP and were followed by a stable, more humid phase until today.

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“…Remains of past wetter climates can be found in today's topography in the form of palaeochannels and palaeoshorelines, in particular in the desert of southern Mongolia [27,28]. We studied the Ulaan Nuur depression (44.53 • N-103.73 • E), located in a large and flat expanse in the Omnogov province, which was in the recent past the southern terminus for the Ongi River.…”

Section: The Ulaan Nuur Palaeolake In Central Asiamentioning

confidence: 88%

Mapping Palaeohydrography in Deserts: Contribution from Space-Borne Imaging Radar

Paillou

2017

Water

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Space-borne Synthetic Aperture Radar (SAR) has the capability to image subsurface features down to several meters in arid regions. A first demonstration of this capability was performed in the Egyptian desert during the early eighties, thanks to the first Shuttle Imaging Radar mission. Global coverage provided by recent SARs, such as the Japanese ALOS/PALSAR sensor, allowed the mapping of vast ancient hydrographic systems in Northern Africa. We present a summary of palaeohydrography results obtained using PALSAR data over large deserts such as the Sahara and the Gobi. An ancient river system was discovered in eastern Lybia, connecting in the past the Kufrah oasis to the Mediterranean Sea, and the terminal part of the Tamanrasett river was mapped in western Mauritania, ending with a large submarine canyon. In southern Mongolia, PALSAR images combined with topography analysis allowed the mapping of the ancient Ulaan Nuur lake. We finally show the potentials of future low frequency SAR sensors by comparing L-band (1.25 GHz) and P-band (435 MHz) airborne SAR acquisitions over a desert site in southern Tunisia.

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Geomorphological investigations and luminescence dating in the southern part of the Khangay and the Valley of the Gobi Lakes (Central Mongolia)

Cited by 92 publications

References 35 publications

Holocene environmental changes in Mongolia: A review

Holocene environmental changes in Mongolia: A review

Holocene climate evolution of the Ugii Nuur basin, Mongolia

Mapping Palaeohydrography in Deserts: Contribution from Space-Borne Imaging Radar

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