• Journal of Korean Society for Atmospheric Environment
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• v.20 no.4
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• pp.437-450
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• 2004

Extensive forest fire activities occurred across the border in Russia, particularly east of Lake Baikal between the Amur and Lena rivers in May 2003. These forest fires released large amounts of particulates and gases into the atmosphere, resulting in adverse effects on regional air quality and the global radiation budget. Smoke pollution from the Russian fires near Lake Baikal was transported to Korea through Mongolia and eastern China. On 20 May 2003, a number of large fires were burning in eastern Russian, producing a thick, widespread pall of smoke over much of Northeast Asia. In this study, separation technique was used for aerosol retrieval application with imagery from MODIS aboard TERRA satellites. MODIS true-color image shows the location of fires and the grayish color of the smoke plumes over Northeast Asia. Aerosol optical thckness (AOT) retrieved from the MODIS data were compared with fire hot spots, ground-based radiation data and TOMS -based aerosol index data. Large AOT, 2.0-5.0 was observed on 20 May 2003 over Korea due to the influence of the long range transport of smoke aerosol plume from the Russian fires, while surface observed fine mode of aerosol size distribution increased.

• Journal of Species Research
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• v.3 no.1
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• pp.17-26
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• 2014

The number of features related to morphology, distribution of habitats, biotopical distribution, and biology of species reproduction (within the territory described) of the Mongolian toad (Bufo raddei) which inhabits western shore of Lake Baikal were described. In this paper on the basis of the results of field studies in 1997, 2001, 2005, 2012 the original data on reproduction and chemical composition of the spawning ponds, used by frogs for reproduction, is presented. It was found that reproduction of species occurs in the salty steppe (14-45 g/L) lakes in the west part of the Baikal basin.

• Korean Journal of Environmental Biology
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• v.22 no.4
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• pp.524-531
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• 2004

Photosynthetic activities and primary production of phytoplankton were investigated in Lake Gocheonam from October 1999 to August 2000. As an estuary lake with a barrage in the Southwestern coast of the Korean peninsula, the lake has received more attention after it became known as the habitat of large population of rare and endangered bird- Baikal Teal. As the lake had high algal biomass ranging from $20\mu{g}\;chl-aL^{-1}\;to\;125\mu{g}\;chl-aL^{-1}$ in average values and rich eutrophication indicator species, the freshwaters were in a very productive or hypertrophic state. In the results obtained from the phytoplankton incubation in the laboratory, the maximum photosynthetic rate $(P_{max})$ varied according to seasons and sampling stations. Photo- synthetic activities were higher during the warm season than the cold seasons and the serial order of $P_{max}$ was August dominated with Microcystis, April with Chlamydomonas and Nitzschia, October with Chlamydomonas and January with Stephanodiscus. The water of the lake was persistently turbid throughout the year due to strong winds from the adjacent sea. Despite the water turbidity, the phytoplankton productions estimated from a mathematical model had very broad range from 18mg C $m^{-2}day^{-1}\;to\;10,300mg\;C\;m^{-2}day^{-1}$.

• Korean Journal of Microbiology
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• v.38 no.3
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• pp.192-197
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• 2002

Fluorescent in situ hybridization (FISH) with rRNA-targeted oligonucleotide probes was used to compare the community structures of free-living and aggregated bacteria at thawing period in Lake Baikal. Targeted groups were Eubacteria, $\alpha$-, $\beta$-, $\gamma$- proteobacteria groups, Cytophaga-Flavobacterium group and Planctomycetales. Total bacterial numbers of free-living bacteria were ranged from $0.2{\times}10^6\cells{\cdot}ml^-1$ to $3.2{\times}10^6\cells{\cdot}ml^-1$, which were decreasing with depth, while the aggregated bacterial numbers were dramatically increasing from $0.4{\times}10^4 to 3.3{\times}10^4 \cells{\cdot}ml^-1$ with depth. The ratios of EUB probe binding cells to DAPI counts were ranged from 52.3 to 74.1% in free-living bacteria, and from 39.6 to 66.7% in the aggregated bacteria, respectively. Community structures of the aggregated bacteria were very different from each free-living bacteria at every depth. At 25 m depth, where the chlorophyll a concentration was highest, both structures were quite different from those of surface layers, rendering the fact that the community structures might be affected by phytoplankton. The vertical profile of community structure of aggregated bacteria is particular. The proportion of $\beta$-proteobacteria group was increasing with depth and it was 51.8% at 100 m, but the dominant group was $\gamma$-pro-teobacteria group at 250 m. Taken together, the biodiversity and succession of aggregated bacteria are quite different from free-living bacteria.

• Journal of Korean Society for Atmospheric Environment
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• v.20 no.5
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• pp.603-613
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• 2004

Extensive forest fires occurred across the border in Russia. particularly east of Lake Baikal between the Amur and Lena rivers in May 2003. These forest fires released large amounts of particulates and gases into the atmosphere. resulting in adverse effects on regional air quality and the global radiation budget. Smoke pollution from the Russian fires near Lake Baikal was sometimes transported to Korea through Mongolia and eastern China. In this study ground based radiation (visible and UV-B) data measured during May 2003 at Seoul and Kwangju were analyzed to estimate smoke aerosol impacts on solar radiation. Surface criteria air pollutants ($PM_{10}$, CO, $O_3$) data were also obtained from National Institute of Environmental Research (NIER) during smoke aerosol event period (19 May~24 May 2003). Large Aerosol Optical Depth (AOD) 1.0~3.0 was observed during this period due to the influence of the long range transport of smoke aerosol plume from the Russian fires, resulting in short-wavelength direct aerosol radiative forcing of -90~ -200W/$m^2$. These smoke aerosol plume caused decrease in surface UV-B radiation up to 80% and increase in PM_(10) concentration up to 200${\mu}g/m^3$ exceeding the 24 hour ambient air quality standard.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.491-492
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• 2003

The large amount of smoke produced near Lake Baikal was transported to Northeast Asia with high AOT (Aerosol Optical Thickness) as seen in satellite images. Aerosol retrieval using a separation technique was applied to MODIS (Moderate Imaging Spectroradiometer) and SeaWiFS (Sea-viewing Wide Field-of-view Sensor) data observed during 14-22 May 2003. Large AOT, 2.0~5.0 was observed on 20 May 2003 over Korea due to the influence of the long range transport of smoke aerosol plume from the Russian fires, resulting in high PM10 concentration was observed at the surface.

• Atmosphere
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• v.29 no.3
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• pp.325-342
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• 2019

Precipitation and no-precipitation events under the influence of the Siberian high pressure system in Yeondong region, were analysed and classified as four types [obvious precipitation event (OP) type, obvious no-precipitation event (ON) type, ambiguous precipitation event (AP) type and ambiguous no-precipitation event (AN) type], according to the easiness in determining whether to have precipitation or not in Yeongdong region, to help in improving the forecast skill. Concerning the synoptic pressure pattern, for OP type, the ridge of Siberian high extends from Lake Baikal toward Northeast China, and there is a northerly wind upstream of the northern mountain complex (located near the Korean-Chinese border). On the other hand, for ON type, the ridge of Siberian high extends southeastward from Lake Baikal, and there is a westerly wind upstream of the northern mountain complex. The pressure pattern of AP type was similar to the OP type and that of AN type was also similar to ON type. Thus it was difficult to differentiate AP type and OP type and AN type and ON type based on the synoptic pressure pattern only. The four types were determined by U (wind speed normal to the Taebaek mountains) and Froude number (FN). That is, for OP type, average FN and U at Yeongdong coast are ~2.0 and ${\sim}6m\;s^{-1}$, and those at Yeongseo region are 0.0 and $0.1m\;s^{-1}$, respectively. On the contrary, for ON type, average FN and U at Yeongdong coast are 0.0 and $0.2m\;s^{-1}$, and those at Yeongseo region are ~1.0 and ${\sim}4m\;s^{-1}$, respectively. For AP type, average FN and U at Yeongdong coast are ~1.0 and ${\sim}4m\;s^{-1}$, and those at Yeongseo region are 0.0 and $0.2m\;s^{-1}$, whereas for AN type, average FN and U at Yeongdong coast are 0.1 and $0.6m\;s^{-1}$ and those at Yeongseo region are ~1.0 and ${\sim}3m\;s^{-1}$, respectively. Based on the result, a schematic diagram for each type was suggested.

• Atmosphere
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• v.20 no.2
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• pp.91-100
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• 2010

In accordance with the time series of rainfall in summer (June, July and August) in South and North Korea for recent 28 years (1981-2008), rainfall is substantially increased in South Korea since 1996, while it is significantly decreased in North Korea. In particular, the decreasing tendency of rainfall in summer in North Korea is more definitely observed during the $2^{nd}$ rainy season (late August - mid September) in intraseasonal variation. Such a feature is also confirmed in the spatial distribution of oscillation pattern between South and North Korea on the basis of 1996 which is obtained by empirical orthogonal function analysis using the summer rainfall observed in all weather observation stations in South and North Korea. For the decreasing tendency of rainfall in North Korea, it is found that northeasterlies from anticyclonic circulation centered on around Baikal Lake weaken convective activity during summer. On the contrary, the increasing tendency of rainfall in South Korea is related to the strengthened cyclonic circulation in the southern region of China and accordingly, enhances southwesterlies in South Korea.

• Journal of the Korean Society of Costume
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• v.5
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• pp.7-11
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• 1981

In the vast extent of time, man and his ancestors have existed on earth about 2,000,000 years. For Near-Man, they knew how to make fire and protected themselves with hairs. Old-Man covered their bodies with the skins of wild animals. New Man improved the quality, the range and ingenuity, so they fabricated clothes with the animal skins. New Man is considered as ancestor of Modern Man. They had spread widely over the earth to take advantage of their surroundings. The next period, New Stone Age was chiefly distinguished by agricultural age. He was now about to make clothes from natural fibers. The two most obvious orgins of clothing are to protect the body against environment and to decorate the body. The forms of clothing were different from the various climates and regions they had settled, for example Yo-po Hyung (Apron), Kwae-po Hung (Sewn garment), Kwan-doo Hyung (Poncho), Chun-kae Hyung (Frontopend garment), Chai-hyung Hyung (Body-conforming shape). Our ancestor had moved from Baikal Lake, Central Asia toward northeast; Shun-tung in China, Manchuria and at last Han Panninsula. Considering our basic costume of ancient times were Yu(jacket), Ko(trousers), Sang(skirt), Po (coat) with the accessories of Kwan (crown), Mo (hat), Dai (belt), Hwa, Eie (footwear), here I conjecture our costume of prehistoric period was Chaihyung Hyung(Body-conforming shape) in the purpose of body covering.

• Korean Journal of Heritage: History & Science
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• v.36
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• pp.105-156
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• 2003

Archaeological research on the Xiongnu began in the late 19th century by a Russian archaeologist Talko-Grinchevich. The Xiongnu culture has been reported in the northern steppe of China and eastern part of Eurasian steppe. Mainly, Xiongnu sites, dated from the late 2nd century B.C. to the 1st century A.D., are reported on the east side of Baikal Lake(Zabaikal), east Mongolia, and the Inner Mongolia of China. Based on the historical records and the archaeological remains, the North Xiongnu culture is defined to be the remains of Zabaikal, and the South Xiongnu culture the archaeological remains of Nothern China. The expelled North Xiongnu, while fleeing to the western part of Eurasia, left traces of their own archaeological remains in the Southern Kazakhstan, Xinjiang of China, Altai, and finally appeared in the Europe as Huns. The most characteristic archaeological materials of the Xiongnu are bronze plaques and ceramics made by handicraft, and highly developed iron weapons. After the power of the Xiongnu was dissolved in 1st c. A.D., previously subordinated peoples such as Xianbi, Wuhuan, Wusun rised in the Eurasia steppes and opened medieval age in Eurasia. The "northern type" materials found in Korea are dated to the period of Xiongnu or slightly later, we need to pay more attention to the contemporary Xiongnu. research.