• 한국항행학회논문지
• /
• 제17권6호
• /
• pp.600-608
• /
• 2013

2011년 3월 11일에 일본 토호쿠 지역에서는 Mw 9 규모의 대지진이 발생하였다. 이 지진으로 인하여 일본지각은 최대 5m 이상의 지각변동이 관측되었으며, 한반도 역시 년간 지각변동량이 순간적으로 이동하는 등 지진의 영향권에 있었다. 이 논문에서는 토호쿠 지진이 발생한지 2.5년 가량 지난 현재의 시점에서 지진 이후의 한반도 지각변동 속도를 분석하고 과거의 한반도 지각변동 속도와 비교함으로써 변화된 지각변동 경향을 분석하였다. 이를 위하여 국토지리정보원의 GPS 관측데이터를 이용하여 2003년부터 2008년까지 6년간의 관측데이터와 지진 이후 6개월 후부터 2013년 6월 말일까지 관측데이터를 이용하여 정밀 좌표를 결정하고 시계열 분석을 통해 남북, 동서, 수직 방향의 절대 속도를 산출하였다. 그 결과 한반도의 지각변동 속도는 토호쿠 지진 발생 이전에 비해 남북 방향으로 평균 3.9mm/yr, 동서 방향으로 평균 7.5mm/yr의 속도 증가가 발생한 것을 알 수 있었다.

• Asia pacific journal of information systems
• /
• 제29권1호
• /
• pp.144-164
• /
• 2019

In their role as stewards of organizational information technology (IT), IT managers participate in crisis management activities. While much has been said about the power of technology in improving preparation for emergencies, the behavior of IT managers in crisis situations is not well understood. This paper addresses IT manager actions during the crisis response effort, when appropriate actions need to be taken at short notice. Recognizing that few guidelines exist for IT managers in these situations, we use recommendations from the crisis management literature in analyzing five earthquake cases from Japan and Taiwan. We identify several recommendations from this set for IT managers, which are related mainly to communications and leadership behaviors, suggesting that the IT manager role is a vital one in crisis response. The research additionally shows that recommendations from the crisis management literature have value also when applied to IT managers. Finally, we conclude on several ways that our understanding of IT manager crisis response could be developed by future research.

• 대한건축학회논문집:구조계
• /
• 제35권2호
• /
• pp.3-11
• /
• 2019

The recent earthquake of Pohang (M5.4) and the Gyeongju earthquake (M5.8) suggested the possibility of a strong earthquake in Korea and reminded us that the Korea is no longer an earthquake-safe zone. In the disaster recovery stage in a disaster like an earthquake, the investigation of the damage situation and the safety assessment of the building serve to provide important information for the initial action such as establishment of the recovery strategy and rescue of the survivor. However, the research that depends on manpower can not cope with the difficulty of processing a large number of doses in a short time, and the expertise of the manpower must be taken into consideration, which may result in delayed initial action. In this study, we propose an rapid safety evaluation technique of building using unmanned aerial vehicle which evaluates the performance and safety of buildings by integrating conventional safety inspection method with unmanned aerial vehicle technology and developed evaluation method of each evaluation factor. In order to verify this, the buildings damaged by the earthquake in Pohang were checked and compared using this system. The results are consistent with the results of the existing emergency earthquake risk assessment. As a result, the possibility of checking the emergency safety using the unmanned aerial vehicle for the damaged structures in case of a large-scale disaster such as an earthquake was confirmed.

• 유통과학연구
• /
• 제14권4호
• /
• pp.55-66
• /
• 2016

Purpose - This article aims to explore the characteristics of disaster risk distribution information in China. Also, this research attempts to analyze the findings of risk communication using case study in chronological order in terms of social amplification of risk. To achieve the purpose, the paper reviews the trends and issues of risk communication in China, with an emphasis on examining earthquakes by a chronological approach. In these regards, we hope that some relevant findings from this empirical study with cases will be able to enhance national risk communication and provide implications in Korea as well. Research design, data, and methodology - The conceptual framework of this study is theoretically based on the risk amplification model, which describes signals about risk transmitted and processed by individuals and social groups. The social amplification of risk also reflects the interactions of social groups about disaster-related risk issues, which are potential amplifiers or attenuators of communication signals. The key concept of social amplification implies that the risks pertaining to natural disasters interact with social, psychological, institutional, and cultural processes in ways that can affect public perceptions of risk. SMCRE Model is methodologically employed to examine risk communication history of China with the focus on natural disaster. Four earthquakes are selected to figure out the chronological characteristics of risk communication since 1970s. He bei Tang Shan earthquake is selected as an example disaster before 1990's, while the earthquake in Yun Nan Jiang is explored for the case study of 1990's. The earthquake in Si Chuan Wen Chuan is also examined as a example disaster of 2000's. The recent earthquake in Si Chuan Ya An Lu Shan is selected as a case of 2010s. Results - SMCRE model in this case study is operationally defined as a methodology and applied to the four earthquakes occurred in China. SMCRE model describes the exchange of risk information and is also applied to all forms of communication between stake holders. Each factor of risk communication includes source, message, channel, receiver and effect. It is notable that a big progress has been made on disaster risk communication in China for the past 40 years. We also found that highly developed information technology has enabled Chinese society to better cope with natural disaster, leading to enhanced disaster risk communication. It is mainly found from case study that the disaster risk communication of China has been involved with political situation, which derived from the change of government for the past 40 years. Conclusion - From this historical research, it can be inferred that the policies and politics of Chinese leaders have had a more critical role to play in the process of source of risk communication than those of any other countries. The results of this paper also support that the effective risk communication involves not only the improved reliability of local government as a key factor of disaster risk communication, but also is accompanied by international cooperation for substantial collaboration with stake holders.

• 한국항해항만학회지
• /
• 제47권1호
• /
• pp.18-24
• /
• 2023

동일본 대지진 이후부터 성인 피해자들의 증언을 정리한 보도와 서적 등이 간행되어 당시의 피난 상황을 알려지게 되었다. 그러나 이러한 자료 중 학생들의 피난 상황 정보는 매우 적으며 지진이나 해일에 의해 이들이 어떤 행동을 취하고 피난을 했는지에 대해서는 충분히 밝혀지지 않았다. 본 연구에서는 동일본 대지진에서 학생들의 피난 행동을 분석 및 고찰하여 향후 예상되는 재난에 대한 학생들의 피난행동에 관한 지식을 얻는 것을 목적으로 한다. 연구결과 학생들은 지진해일에 대한 정보를 수동적으로 얻고 있으며, 피난행동은 성인에 크게 의존하고 있었다. 지진 발생 직후 행동은 흔들림이 멈출 때까지 자신의 몸을 보호하며 가만히 있는 경우가 많았고 흔들림이 잦아든 후 다른 장소로 이동하는 취하는 경향을 알 수 있었다. 지진해일의 위협으로부터 벗어나기 위해 리아스식 해안지역 학생들은 주로 높은 곳으로 이동하였고, 평야지역 학생들은 학교 등 높은 건물로 이동하여 수직 이동하는 것을 알 수 있었다. 피난 장소로의 이동 형태는 한번의 이동으로 최종 피난장소에 도착하였으며 이는 사전에 피난 장소를 결정하고 움직였다고 판단된다.

• Asian Journal for Public Opinion Research
• /
• 제1권4호
• /
• pp.249-267
• /
• 2014

Social media is being increasingly utilized in disaster relief work to identify safety issues, locate displaced-victims, and seek or provide support for those who need help. The presence of social media in disaster management has changed significantly in recent years, as it was not prevalent in the 2008 Wenchuan earthquake, but had become a powerful force in the 2013 Ya'an earthquake. This paper discusses the development of social media in disaster management via making a comparison between how it functioned in the two earthquakes. It examines the following aspects: who are the stakeholders that use social media in the earthquake management; how do they adopt this means in response to the earthquakes; and what are the outcomes of adopting social media with regards to public engagement and collaboration in an emergency event. As Sina Weibo acts as the equivalent of China's Twitter, the methodology relies on an analysis of posts in Weibo. The outcomes primarily show that: (1) authorities, celebrities and the public actively adopted social media for the purpose of information dissemination and resource mobilization; and (2) social media users are both content consumers and content generators in the times of earthquakes. The study concludes that social media as a backchannel communication tool is helpful for government institutions, corporations, and nonprofit organizations to build relationships with their stakeholders in the disaster management cycle. The result will interest academics and emergency management practitioners who are concerned with improving disaster communication.

• 대기
• /
• 제24권3호
• /
• pp.445-456
• /
• 2014

A real-time quality control system for meteorological data (air temperature, air pressure, relative humidity, wind speed, wind direction, and precipitation) measured by an integrated meteorological sensor has been developed based on comparison of quality control procedures for meteorological data that were developed by the World Meteorological Organization and the Korea Meteorological Administration (KMA), using time series and statistical analysis of a 12-year meteorological data set observed from 2000 to 2011 at the Incheon site in Korea. The quality control system includes missing value, physical limit, step, internal consistency, persistence, and climate range tests. Flags indicating good, doubtful, erroneous, not checked, or missing values were added to the raw data after the quality control procedure. The climate range test was applied to the monthly data for air temperature and pressure, and its threshold values were modified from ${\pm}2{\sigma}$ and ${\pm}3{\sigma}$ to ${\pm}3{\sigma}$ and ${\pm}6{\sigma}$, respectively, in order to consider extreme phenomena such as heat waves and typhoons. In addition, the threshold values of the step test for air temperature, air pressure, relative humidity, and wind speed were modified to $0.7^{\circ}C$, 0.4 hPa, 5.9%, and $4.6m\;s^{-1}$, respectively, through standard deviation analysis of step difference according to their averaging period. The modified quality control system was applied to the meteorological data observed by the Weather Information Service Engine in March 2014 and exhibited improved performance compared to the KMA procedures.

• 한국지구물리탐사학회:학술대회논문집
• /
• 한국지구물리탐사학회 2010년도 학술대회 초록집
• /
• pp.121-124
• /
• 2010

• Earthquakes and Structures
• /
• 제13권2호
• /
• pp.165-176
• /
• 2017

Multi-Axial Testing System (MATS) is a 6-DOF loading system located at National Center for Research on Earthquake Engineering (NCREE) in Taiwan for advanced seismic testing of structural components or sub-assemblages. MATS was designed and constructed for a large variety of structural testing, especially for the specimens that require to be subjected to vertical and longitudinal loading simultaneously, such as reinforced concrete columns and lead rubber bearings. Functionally, MATS consists of a high strength self-reacting frame, a rigid platen, and a large number of servo-hydraulic actuators. The high strength self-reacting frame is composed of two post-tensioned A-shape reinforced concrete frames interconnected by a steel-and-concrete composite cross beam and a reinforced concrete reacting base. The specimen can be anchored between the top cross beam and the bottom rigid platen within a 5-meter high and 3.25-meter wide clear space. In addition to the longitudinal horizontal actuators that can be installed for various configurations, a total number of 13 servo-hydraulic actuators are connected to the rigid platen. Degree-of-freedom control of the rigid platen can be achieved by driving these actuators commanded by a digital controller. The specification and information of MATS in detail are described in this paper, providing the users with a technical point of view on the design, application, and limitation of MATS. Finally, future potential application employing advanced experimental technology is also presented in this paper.

• 대한원격탐사학회지
• /
• 제35권6_3호
• /
• pp.1221-1233
• /
• 2019

화산재 누적에 따라 발생할 수 있는 각 분야별 피해를 산정하는 것은 화산재 재해를 대비하는 측면에서 매우 중요하다. 본 연구에서는 기존 연구에서 제시된 공간정보 기반의 국내 화산재 피해 분야에 대하여 아소산 화산재 모의 확산 시나리오를 적용하여 각 분야에서 발생할 수 있는 화산재 피해의 정도를 나타냈다. 이를 위하여 기존의 사례 연구를 통하여 제시된 국내 화산재 피해 분야와 관련된 공간정보 자료를 수집하고 가공함으로써 화산재 피해 기반자료를 생성하였다. 수집된 두 개의 아소산 화산 모의 분화 시나리오를 활용하여 중첩분석을 통해 분야별 피해를 나타냈다. 그 결과 각 분화 시나리오에 대하여 162개, 134개 시군구에서 강회 피해 최소 기준인 0.01 mm 이상의 강회량에 따라 피해가 발생할 것으로 예상되었다. 가장 강회량이 많은 행정구역(시나리오 190805-강원, 경북; 시나리오 190811-춘천, 홍천)을 선정하여 발생 가능한 분야별 피해의 정도를 수집 가공한 공간정보 자료를 활용하여 서로 비교하였다.