Y. Ovsepyan
Russian Academy of Sciences
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Featured researches published by Y. Ovsepyan.
Stratigraphy and Geological Correlation | 2015
Y. Ovsepyan; E. Taldenkova; Henning A. Bauch; Evgeniya Kandiano
This work is dedicated to the study of benthic and planktonic foraminifers and is a contribution to the multidisciplinary investigations of Core PS51/154-11 from the Laptev Sea. The paleoecological analysis of foraminiferal assemblages makes it possible to reconstruct in detail environmental changes on the western continental margin of the Laptev Sea during the Late Pleistocene and Holocene. The examined core dated by the AMS radiocarbon method is divided into intervals that reflect main stages in the regional evolution for the last 17.6 k.y.: early deglaciation, Bølling–Allerød warming, Younger Dryas cooling, transition to the Interglacial, Holocene climatic optimum, Middle-Late Holocene. The presence of subpolar planktonic foraminifers and benthic species Cassidulina neoteretis (Tappan) provides grounds to reconstruct for the continental slope area stages of the enhanced activity of subsurface Atlantic-derived water in the intervals of 12.0–14.7 and 0.6–5.4 ka. The benthic assemblage reflects changes in depositional environments related to the postglacial transgression and also climatic change impacts affecting bioproductivity. The events defined on the basis of foraminifers are correlated with climatic oscillations and changes in circulation of water masses.
[Talk] In: Annual Scientific Conference of the MOIP Paleontological Section, Moscow Branch of the Paleontological Society, RAS, 26.-28.01.2015, Moscow, Russia . | 2015
Y. Ovsepyan; E. Taldenkova; Anna Stepanova; O. Rudenko; Henning A. Bauch
[Talk] In: All-Russian Markov 2015 Conference, 08.-11.06.2015, Moscow, Russia . | 2015
E. Taldenkova; Sergei Nikolaev; N. I. Chistyakova; Anna Stepanova; Y. Ovsepyan; Henning A. Bauch; Robert F. Spielhagen; M. Segl
Taldenkova, E., Stepanova, A., Ovsepyan, Y., Bauch, Henning A. and Rudenko, O. (2015) Paleoenvironmental changes in the northeastern White Sea during Late Saalin - early Eemian times inferred from multiproxy investigation of the Bychye sediment section, the Pyoza River [Poster] In: All-Russian Markov 2015 Conference, 08.-11.06.2015, Moscow, Russia. | 2015
E. Taldenkova; Anna Stepanova; Y. Ovsepyan; Henning A. Bauch; O. Rudenko
Taldenkova, E., Nikolaev, S. D., Chistyakova, N. O., Stepanova, A. Yu., Ovsepyan, Ya. S., Bauch, Henning A., Spielhagen, Robert F. and Segl, M. (2015) Poslednikovaya istoriya kontinental’noi okrainy morya Laptevykh (Postglacial history of the Laptev Sea continental margin) Aktual’nye problemy paleogeografii i stratigrafii pleistotsena: Materialy Vserossiskoi konferentsii “Markovskie chteniya 2015 goda” (Current Problems of the Paleogeography and Stratigraphy of the Pleistocene: Materials of the All-Russian Markov Conference 2015). MGU, Moscow, pp. 202-204. | 2015
E. Taldenkova; Sergei Nikolaev; N. O. Chistyakova; A. Yu. Stepanova; Y. Ovsepyan; Henning A. Bauch; Robert F. Spielhagen; M. Segl
Rudenko, O., Enina, V., Ovsepyan, Ya., Taldenkova, E. and Bauch, Henning A. (2015) Palynological associations from bottom sediments of the Laptev Sea continental slope: implications for paleoenvironmental reconstructions [Talk] In: 9. All-Russian Conference on the Quaternary Period, 15.09.-20.09.2015, Irkutsk, Russia. | 2015
O. Rudenko; V. Enina; Y. Ovsepyan; E. Taldenkova; Henning A. Bauch
Ovsepyan, Y., Chistyakova, N., Taldenkova, E., Bauch, Henning A. and Spielhagen, Robert (2015) Late Pleistocene-Holocene paleoreconstructions based on comparison study of foraminiferal assemblages from the western and eastern Laptev Sea continental margin (Pozdnepleistotsen-golotsenovye paleorekonstruktsii na osnove sopostavleniya kompleksov foraminifer v kolonkakh zapadnoi i vostochnoi chasti kontinental’noi okrainy morya Laptevykh) [Talk] In: 16. All-Russian Conference on Micropaleontology, 24.08.-28.08.2015, Kaliningrad, Russia. | 2015
Y. Ovsepyan; N. I. Chistyakova; E. Taldenkova; Henning A. Bauch; Robert F. Spielhagen
Ovsepyan, Y. S., Chistyakova, N. O., Taldenkova, E., Bauch, Henning A. and Spielhagen, Robert F. (2015) Pozdnepleistotsen-golotsenovye paleorekonstruktsii na osnove sopostavleniya kompleksov foraminifer v kolonkakh zapadnoi i vostochnoi chasti kontinental’noi okrainy morya Laptevykh (Late Pleistocene – Holocene paleoreconstructions based on comparison study of foraminiferal assemblages from the western and eastern Laptev Sea continental margin) Sovremennaya mikropaleontologiya. Sbornik trudov XVI Vserossiiskogo mikropaleontologicheskogo soveshchaniya. AO IO RAN, Kaliningrad, pp. 248-251. | 2015
Y. Ovsepyan; N. O. Chistyakova; E. Taldenkova; Henning A. Bauch; Robert F. Spielhagen
Ovsepyan, Y. S., Chistyakova, N. O., Taldenkova, E., Bauch, Henning A. and Spielhagen, Robert F. (2015) Paleorekonstruktsii po novym kolonkam iz vostochnoy chasti morya Laptevykh v kontekste sobytiy pozdnepleystotsen-golotsenovoy istorii regiona (Paleoenvironmental reconstructions based on the new records from the eastern Laptev Sea in the context of the late Pleistocene-Holocene history of this region) Geologiya morei i okeanov. Materialy XXI Mezhdunarodnoi konferentsii (Shkoly) po morskoi geologii (Geology of seas and oceans. Proceedings of the XXI International Marine Geology Conference (School) Vol. 4. GEOS, Moscow, pp. 291-294. | 2015
Y. Ovsepyan; N. O. Chistyakova; E. Taldenkova; Henning A. Bauch; Robert F. Spielhagen
Ovsepyan, Y. S., Chistyakova, N. O., Taldenkova, E., Bauch, Henning A. and Spielhagen, Robert F. (2015) Paleoreconstructions of the late Pleistocene – Holocene history of the eastern Laptev Sea based on the data from new sediment cores (in Russian) Geologiya morei i okeanov. Materialy XXI Mezhdunarodnoi konferentsii (Shkoly) po morskoi geologii. GEOS, Moscow, pp. 291-294. | 2015
Y. Ovsepyan; N. O. Chistyakova; E. Taldenkova; Henning A. Bauch; Robert F. Spielhagen
