For last years as an increase of economic growth of Mongolia the infrastructures such as roads, power plants and others have been built in Mongolia. Some of these infrastructures will be built in permafrost areas. Within conception agreement between Mongolian government and an international team of companies (QDF SUEZ Energy Asia, Sojitz Corporation, POSCO Energy, and NEWCOM) new combined heat and power plant is planning to construct near the Ulaanbaatar city. There is sparsely insular permafrost distribution at the site of this power plant. Permafrost team of our laboratory have completed the permafrost distribution map of this site using the ERT method and temperature measurements in boreholes. The site of power plant has a patchy permafrost.

Our young staff, A.Dashtseren, has completed a PhD course in Hokkaido University in 2015. He got PhD degree within the framework of long-term corporation between our institute and Hokkaido University. Prof M.Ishikawa from Hokkaido University and Prof T.Hiyama from Nagoya University have participated in field work through Hovsgol and Hangai mountain regions in this summer.

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Figure 1. Field trip 2015 in Hangai and Hovsgol mountain regions, from left T.Hiyama, Kh.Temuujin, M.Ishikawa, A.Dashtseren, D.Renchindamba, T.Nara, Ch.Sukhbaatar, Ts.Undrakhtsetseg, 2015.08.12

Within new agreement of our institute and Oslo University we have installed 100 button data loggers in Terelj observation area, about 70 km to south-east from Ulaanbaatar. In end of this year, we have been to upstream site of Sugnugur River, where we installed the sensors of moisture and temperature for study interactions between permafrost and surface water within agreement with Prof Lucas Menzel from Heidelberg University, Germany.

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Figure 2. Upstream area of Sugnugur River, 2015.12.01

Within 2015, we have been completing the new permafrost map of Mongolia within the national project of spatial and temporal modelling of permafrost in Mongolia. We have used the TTOP modelling approach for this map and used the data from investigations on permafrost for Mongolia. During 2014-2015, we drilled several shallow boreholes to determine the lower limits of permafrost distribution in Altay, Hangai and Eastern Mongolia. We have several permafrost map of Mongolia with different scales all over the Mongolia since 1950-1960s. Firstly, N.Lonjid, senior scientist and founder of permafrost laboratory in Mongolia, had established the permafrost map based on data from that time. In 1971 newly permafrost map was completed as results of joint Mongolian and Soviet Union expedition. This map is familiar as a Gravis map. After these maps, several maps with different scales were completed by national scientists, usually N.Sharkhuu completed these maps. All of these maps were completed based on data from temperature measurement in boreholes and regulations of ground temperatures.

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Figure 3. During the drilling work, Hangai mountain region, 2014.10.15

Report prepared by Jambaljav Yamkhin (