NSU students investigated what secrets the Altai Baikal keeps

Posted on 29 January 2018

Many geologists are discussing what Teletskoye Lake awaits in the future. Could the lake become as large as Lake Baikal or it decreases conversely to the size of a mountain river with time?

Students of GGF NSU in cooperation with students from universities of Russia and the near abroad tried to answer another important question: what climate on Teletskoye Lake and in nearby regions was and what it will be.

This summer an international geophysical field school-conference "On the Wave" was organized in Artybash village by the student community of NSU exploration geophysics jointly with IPGG SB RAS, with the support of international communities The Society of Geophysicists-Geologists and the Society of Petroleum Engineers (SPE). More than 30 people from Novosibirsk, Moscow, Perm, Tyumen, Kazakhstan and the Netherlands took part in the field school.


Participants of the international geophysical field school-conference "On the Wave"

The goal of the project was to conduct an aggregate of geophysical researchers on land and water areas of the Teletskoye Lake and to determine the thickness of the sedimentary cover and the structure of the foundation beneath it.

"Reconstruction of the paleoclimate is an urgent task for modern researchers. - says the project manager, the master's degree candidate of the Novosibirsk State University, Andrei Lyovochkin. - It allows you to not only find out what the climate was in ancient times but also make predictions about climate change in the investigation region in the future. Time series of meteorological measurements rarely exceed 200 years, and one of the ways to restore the climatic parameters for a longer period is X-ray spectral analysis of bottom sediments. It allows determining the geochemical composition of sediments, which can be compared with the change in meteorological parameters (for example, humidity or temperature). Geophysical studies allow us to determine the most favourable locations for drilling and sampling, where bottom sediments have a maximum thickness and undisturbed structure."

The works were carried out at two sites: the surface and underwater parts of the Samyshev River delta and the subsoil elevation of Sofia Lepnyova. In addition to the researchers themselves, directly "in the field," students were trained to work with the equipment, make measurements and monitor the data received.


Preparation of equipment for marine research from a ship

In addition to fieldwork, during the school, a whole series of training lectures on the processing and interpretation of marine seismic-acoustic data, ground-based electrical survey methods, spectral analysis of data and other topical issues of modern geophysics were conducted.


Lecture of a graduate student from Delft University of Technology (Netherlands)

"The project was aimed not only to carry out an aggregate of researchers but also teaching students to properly plan and conduct field geophysical research. It should also be noted that such works can be considered methodical, since they are rarely found in research problems, but they have great fundamental and practical significance. Previously, such geophysical work on the lake territory was not carried out, therefore our school will help not only in the task of climate research but also contribute to the history of Teletskoye Lake studying", said Andrei Lyovochkin.

The photos are provided by Valentina
Sedegova, a student of Perm
State University, a participant
of the field school-conference.