Investigations of lake sediments and limno-monitoring
Lake sediment investigations are currently concentrating on lake Chatyr-Kul in eastern Kyrgyzstan, and on the Sary-Chelek Lake in the Chatkal Mountain Range (W-Kyrgyzstan), which has over 200 meter water depth and formed by a huge landslide of unknown age.
From various sub-basins of the Sary-Chelek short gravity cores were obtained with varved sediments. A thick slump found at the base of the cores is most likely caused by a major historical earthquake (Chatkal 1946 AD). Since 2013, various limnological and meteorological parameters have been measured in and around the Sary-Chelek. These data sets are used to understand the current dynamics of the lake and the paleoclimate proxy data obtained from lake sediments. Lake Chatyr-Kul and its catchment is currently under investigation, using a unique finely laminated sediment core comprising the whole Holocene history of climate and environmental change.
Within an A. v. Humboldt Climate Protection Fellowship we are developing novel techniques for recording limnologic data from remote mountain lakes.
Partners
Dr. Ryskul Usubaliev (CAIAG Bishkek, Kyrgyzstan)
Ecenali Ormonaliev, Toktonaly Zunusov (Sary-Chelek National Reserve Authority, Arkit, Kyrgyzstan)
Dr. Natalia Ershova (Kyrgyz-Russian Slavonian University Bishkek, Kyrgyzstan; Institute of Water Problems and Hydro-Power, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan)
Gulbara Omorova (Institute of Water Problems and Hydro-Power, Kyrgyz National Academy of Sciences, Bishkek, Kyrgyzstan)
Schroeter, N., Mingram, J., Kalanke, J., Lauterbach, S., Tjallingii, R., Schwab, V.F., Gleixner, G. (2021). "The Reservoir Age Effect Varies With the Mobilization of Pre-Aged Organic Carbon in a High-Altitude Central Asian Catchment." Frontiers in Earth Science 9: 532. https://doi.org/10.3389/feart.2021.681931
Kalanke, J., Mingram, J., Lauterbach, S., Usubaliev, R., Tjallingii, R., Brauer, A. (2020). "Seasonal deposition processes and chronology of a varved Holocene lake sediment record from Chatyr Kol lake (Kyrgyz Republic)." Geochronology 2(1): 133-154. https://doi.org/10.5194/gchron-2-133-2020
Schroeter, N., Lauterbach, S., Stebich, M., Kalanke, J., Mingram, J., Yildiz, C., Schouten, St., Gleixner, G. (2020). "Biomolecular Evidence of Early Human Occupation of a High-Altitude Site in Western Central Asia During the Holocene." Frontiers in Earth Science 8: 20. https://doi.org/10.3389/feart.2020.00020
Schroeter, N., Toney, J.L., Lauterbach, S., Kalanke, J., Schwarz, A., Schouten, St., Gleixner, G. (2020). "How to Deal with Multi-Proxy Data for Paleoenvironmental Reconstructions: Applications to a Holocene Lake Sediment Record from the Tian Shan, Central Asia." Frontiers in Earth Science 8: 353. https://doi.org/10.3389/feart.2020.00353
Lauterbach, S., Mingram, J., Schettler, G., Sagynbek Orunbaev, S. (2019). "Two twentieth-century MLH = 7.5 earthquakes recorded in annually laminated lake sediments from Sary Chelek, western Tian Shan, Kyrgyzstan." Quaternary Research doi:10.1017/qua.2019.21. https://doi.org/10.1017/qua.2019.21
Seim, A., G. Omurova, G., Azizov, E., Musuraliev, K., Aliev, K., Tulyaganov, T., Nikolyai, L., Botman, E., Helle, G., Dorado Linan, I., Jivcov, S., Linderholm, H.W. (2016). "Climate Change Increases Drought Stress of Juniper Trees in the Mountains of Central Asia." PLoS ONE 11(4): e0153888. https://doi.org/10.1371/journal.pone.0153888
Witt, R., Günther, F., Lauterbach, S., Kasper, T., Mäusbacher, R., Yao, T., Gleixner, G. (2016). "Biogeochemical evidence for freshwater periods during the Last Glacial Maximum recorded in lake sediments from Nam Co, south-central Tibetan Plateau." Journal of Paleolimnology 55(1): 67-82. https://doi.org/10.1007/s10933-015-9863-1
Mingram, Jens, Stefan Lauterbach, Sushma Prasad, Gerd Helle, Birgit Plessen, Georg Schettler, 2013. Paläoklima, Umwelt und Klimawandel in Zentralasien. System Erde 3, 2. https://doi.org/10.2312/GFZ.syserde.03.02.9
Lauterbach, S., R. Witt, B. Plessen, P. Dulski, S. Prasad, J. Mingram, G. Gleixner, S. Hettler-Riedel, M. Stebich, B. Schnetger, A. Schwalb and A. Schwarz, 2014. Climatic imprint of the mid-latitude Westerlies in the Central Tian Shan of Kyrgyzstan and teleconnections to North Atlantic climate variability during the last 6000 years. The Holocene 24(8), 970-984. https://doi.org/10.1177/0959683614534741
Schettler, G., A. Shabunin, H. Kemnitz, K. Knoeller, S. Imashev, A. Rybin and H.-U. Wetzel, 2014. Seasonal and diurnal variations in dust characteristics on the northern slopes of the Tien Shan – Grain-size, mineralogy, chemical signatures and isotope composition of attached nitrate. Journal of Asian Earth Sciences 88, 257-276. https://doi.org/10.1016/j.jseaes.2014.03.019
