• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2009.10a
• /
• pp.438-439
• /
• 2009

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2009.10a
• /
• pp.259-260
• /
• 2009

• Proceedings of the Korea Air Pollution Research Association Conference
• /
• 2010.04a
• /
• pp.416-417
• /
• 2010

• Korean journal of applied entomology
• /
• v.52 no.4
• /
• pp.321-326
• /
• 2013

Eleven Coleophora species were found in a faunistic survey for the family Coleophoridae (Lepidoptera: Gelechioidea) in Baengnyeong and Yeonpyeong Islands, located near the Northern Limit Line in the West Sea. Among them, three species Coleophora adjunctella Hodgkinson, C. chenopodii Oku, and C. kurokoi Oku have been recorded for the first time in Korea. For the newly recorded species, taxonomic remarks and illustrations of the adults and female genitalia have been provided.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.04a
• /
• pp.227-230
• /
• 2010

2010년 3월 26일 21시 45분경, 백령도 서남쪽 1.6km(1마일)해상에서 대한민국 해군의 초계함 천안함이 원인 미상의 사고로 침몰한 사건이 발생하였다. 이에 연안공학자의 입장에서는 수색 및 구조에 필요한 기초자료인 해상조건들을 제공하고 시뮬레이션을 통한 보다 자세한 예측 및 유추가능한 자료를 제공한다는 것은 뜻깊은 일임에 틀림없다. 이에 본 연구에서는 백령도-대청도 부근해역의 기상, 파랑, 조석 및 조류, 저질, 부유사 상태등을 조사 분석하고 이를 기초로 해역특성을 분석하였다. 사건당시의 유속상황은 소조기(neap tide)-중조기 (mean tide) 사이에 해당하며 3월 26일이 지나고 4월 3~4일까지는 유속이 가장 강한 대조기 (spring tide)가 진행되는 시점으로 수색 및 구조작업에 에로사항이 있는것으로 파악되었다. 또한, 21:00-22:00 경은 낙조가 진행 중에 있기 때문에 물질이동은 남동쪽이 우세할 것으로 보이며 특히, 불규칙한 해저지형으로 인하여 급격한 와류 등이 존재할 것으로 판단되어 입자추적실험을 수행하였다. 수행 결과, 입자는 유속상황에 따라서, 초기에는 남동쪽으로 이동하지만 장기 예측결과, 외해쪽으로 흘러가는 것으로 나타났다. 이를 통하여 추후, 수색작업의 범위를 외해쪽으로 확대시켜야 할 것으로 사료된다.

• Journal of The Geomorphological Association of Korea
• /
• v.27 no.2
• /
• pp.47-64
• /
• 2020

The Baengnyeongdo-island, located at the northernmost point of the west coast, has developed several coastal landforms. Although the coastal landforms of Baengnyeongdo-island are widely used as a tourism resource, a lot of academic research has not been conducted. In this study, particle size analysis, XRF, and OSL age dating were performed on the BR sandy deposits to find out the formation of coastal sand dunes on Baengnyeongdo-island. Based on the physicochemical properties, the BR section was divided into three parts; BR-A, BR-B and BR-C. First, about 56ka, which corresponds to the MIS 3, fine sand was deposited and forms the BR-C section. Second, the BR-B which located middle part of BR section, showed reversed age stratigraphy. The BR-B was interpreted as reworked sediments based on sedimentary facies and chemical weathering intensity. And, the BR-A composed of fine and medium sands was formed in middle Holocene. This research has significance in that it finds out the paleo sand dunes formed in Pleistocene. This study can contribute to understanding coastal sand dune development on the west coast.

• Geophysics and Geophysical Exploration
• /
• v.13 no.3
• /
• pp.235-242
• /
• 2010

Two moderate earthquakes with local magnitude 4.9 and 5.0 at the Yellow Sea area occurred successively around Hong island on March 22, 2003 and Baengnyeong island on March 30, 2003, respectively, close to the Korean Peninsula. Focal mechanisms by the waveform inversion analysis are strike slip faulting with a thrust component for the March 22 event, and normal faulting for the March 30 event. The direction of P-axes of two events were ENE-WSW which were similar to previous studies on that of P-axes in and around the Korean Peninsula. Moment magnitudes determined by the waveform inversion analysis were 4.7 and 4.5, respectively, whereas those determined by spectral analysis were 4.8 and 4.6, respectively. As regards the March 22 event, regional stress by combined tectonic forces from compressions of plates colliding to the Eurasian plate, rather than mere local stress, was indicated. However, it was estimated that the March 30 event took place when the weak zone generated from the existing collision zone was reactivated when subjected to local stress in the tensile direction. This seismological observation indirectly supports the idea that the collision zone may extend to the Korean Peninsula.

• 어항어장
• /
• s.82
• /
• pp.54-58
• /
• 2008

• JOURNAL OF ELECTRICAL WORLD
• /
• s.437
• /
• pp.46-49
• /
• 2013

• Journal of Conservation Science
• /
• v.38 no.3
• /
• pp.192-200
• /
• 2022

This study aimed for species identification and tree-ring dating and radiocarbon dating of wooden warehous materials excavated from Baengnyeongsanseong in Geumsan. The species of 83 wooden materials were identified as 38 Platycarya spp., 34 Cerris Section, 8 Prinus section, 2 Hard pine, and 1 Kalopanax pictus. After cross-dating of 5 Cerris Section samples with the TSAP program, one Cerris Section chronology (GSQU 1S) was constructed. To identify the exact date, one material which show many tree-ring (GSQU 05) was analyzed by radiocarbon dating using wiggle match. As a result of radiocarbon dating, the outermost edge of east beam (GSQU 05) was found to be A.D. 575-655 or A.D. 665-685. The radiocarbon dating of wooden warehouse material was consistent with the archaeologically estimated date.