• Korean Journal of Remote Sensing
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• v.39 no.5_2
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• pp.743-754
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• 2023

The global occurrence of myriad natural disasters and incidents, catalyzed by climate change and extreme meteorological conditions, has engendered substantial human and material losses. International organizations such as the International Charter have established an enduring collaborative framework for real-time coordination to provide high-resolution satellite imagery and geospatial information. These resources are instrumental in the management of large-scale disaster scenarios and the expeditious execution of recovery operations. At the national level, the operational deployment of advanced National Earth Observation Satellites, controlled by National Geographic Information Institute, has not only catalyzed the advancement of geospatial data but has also contributed to the provisioning of damage analysis data for significant domestic and international disaster events. This special edition of the National Disaster Management Research Institute delineates the contemporary landscape of major disaster incidents in the year 2023 and elucidates the strategic blueprint of the government's national disaster safety system reform. Additionally, it encapsulates the most recent research accomplishments in the domains of artificial satellite systems, information and communication technology, and spatial information utilization, which are paramount in the institution's disaster situation management and analysis efforts. Furthermore, the publication encompasses the most recent research findings relevant to data collection, processing, and analysis pertaining to disaster cause and damage extent. These findings are especially pertinent to the institute's on-site investigation initiatives and are informed by cutting-edge technologies, including drone-based mapping and LiDAR observation, as evidenced by a case study involving the 2023 landslide damage resulting from concentrated heavy rainfall.

• Journal of the Society of Disaster Information
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• v.18 no.3
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• pp.609-621
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• 2022

Purpose: Natural Disaster has well formed framework more than social disaster, because natural disaster is controlled by one department, such as MOIS, but social disaster is distributed. This study is on the design of the integrated service platform for the social diaster data. and then, apply to the local governments. Method: Firstly, we design DB templates for the incident cases considering the incident investigation reports. For the risk management, life-damage oriented social disaster risk assessment is defined. In case of the real-time incident data from NDMS, AI system provides the prediction information in the life damage and the cause of the incident. Result: We design the structured and unstructured incident data management system, and design the integrated social disaster and safety incident management system. Conclusion: The integrated social disaster and safety incident management system may be used in the local governments

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.305-306
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• 2022

본 연구에서는 강우에 의한 현장 사면 붕괴현장을 조사하여 원인 분석 후에 안정적인 비탈면 경사를 결정한 사례연구로서 사면붕괴현장을 조사하여 사면 경사를 당초 약40°에서 29°로 완만하게 함으로서 사면의 안정을 확보하는 결론을 도출하였다.

• Korean Journal of Remote Sensing
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• v.39 no.5_2
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• pp.827-835
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• 2023

Drone light detection and ranging (LiDAR) is a state-of-the-art surveying technology that enables close investigation of the top of the mountain slope or the inaccessible slope, and is being used for field surveys in mountainous terrain. To build topographic information using Drone LiDAR, a preprocessing process is required to effectively separate ground and non-ground points from the acquired point cloud. Therefore, in this study, the point group data of the mountain topography was acquired using an aerial LiDAR mounted on a commercial drone, and the application and accuracy of the cloth simulation filtering algorithm, one of the ground separation techniques, was verified. As a result of applying the algorithm, the separation accuracy of the ground and the non-ground was 84.3%, and the kappa coefficient was 0.71, and drone LiDAR data could be effectively used for landslide field surveys in mountainous terrain.

• Journal of the Society of Disaster Information
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• v.17 no.3
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• pp.442-453
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• 2021

Purpose: The objective of this study is to suggest desirable direction of Korean accident investigation organization by analyzing the operation status and way of overseas developed countries' investigation agency. Method: To accomplish the objective of this study, we were examined four main characteristics of accident investigation agencies of the U.S., Japan, and Sweden, focusing on (1); the background of the establishment, (2);organizational structure, (3);major tasks and functions, (4); accident investigation procedures. Result: First, the purpose of its establishment and task is to prevent recurrence of disasters and accidents, at the same time, administrating and researching duties such as legal system, policy, recommending improvement and conducting scientific disaster-cause analysis to contribute safety for the government. Second, it is operated as an independent organization under the president, not belonging to the ministry, in order to enable fair investigation in an impartial position. Third, it has the authority to be recognized for its expertise in the results of investigation. In other words, it is operated as a permanent organization with professional personnel, and secures authority through the accident research with indepth investigation and high-quality recommendations. Conclusion: The overseas investigation agencies rapidly manage and coordinate their operational practices in order to resolve national requirements and social conflicts with fairness, accuracy and expertise in accident investigations. In order to prevent the recurrence of similar events, Korea needs to efficiently reconstruct its investigative functions distributed by each government department. In addition, institutional improvement is needed to make general adjustments at the national level, organize and operate control tower for when the accident has happened.

• Journal of the Korean Society of Safety
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• v.38 no.2
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• pp.68-80
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• 2023

Cooperation between government agencies is important for disaster management, and a thorough and objective cause investigation is important to prevent the recurrence of similar disasters. In South Korea, individual laws are scattered by ministries according to the disaster type, and most are operated as non-permanent organizations that are employed when disasters occur. Although expertise is recognized for each disaster type, each government agency's operation method is different, so when a large-scale disaster involving multiple ministries occurs, there is a limit to the coordination of roles and integrated management between government agencies. In particular, whenever a large-scale complex disaster occurs, problems arise regarding the independence, professionalism, and fairness of the cause investigation. Therefore, to supplement this, reviewing the management methods and systems of disaster cause investigations in advanced countries is necessary. Thus, in this study, the organization status, manpower, organizational structure, and cause investigation work system of NTSB of the United States, JTSB of Japan, and SHK of Sweden are identified to improve the disaster cause investigation system in Korea and are compared and analyzed with Korea's GDCIG. Additionally, issues and problems for the advancement of Korea's disaster cause investigation system are considered and improvements are suggested.

• Journal of Korean Society for Geospatial Information Science
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• v.24 no.3
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• pp.75-83
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• 2016

There are various types of disasters now, and accordingly it is practically difficult to manage all types of disasters effectively. If we are able to reconstruct the disaster event and investigate the cause, it may be possible to prepare the recurrence of similar patterns of disasters. The vehicle-based system equipped with state-of-the-art sensors has been proposed in order to reconstruct the disaster site as much as possible and help the disaster investigator to analyze the cause of the disaster by providing high-quality information. However, the data quality obtained from the sensors can be lowered due to unpredictable circumstances of disaster site. In this aspect it is essential to provide practical procedures that assess and analyze the performance of the equipment on site. In this paper, we selected critical elements of performance that can evaluate the vehicle-based image acquisition system, since it is the most critical piece of information in the disaster sites. The quality of the images obtained from vehicle-based image system was analyzed and verified on the test site. From the results of spatial resolution based on GRD(Ground Resolved Distance), we were able to identify maximum 5mm of spatial resolution at a distance of 70m distance. The result of field test is expected to be used for data acquisition plan in future disaster situations.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.337-341
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• 2009

지구의 평균기온이 지속적으로 상승함에 따라 지구온난화로 인한 기후변화는 지구에 분포되어 있는 극지방의 빙하들을 녹임으로써 지구의 물 순환시스템을 교란시켜 집중호우와 태풍, 가뭄, 낙뢰 등 예측을 불허하는 극한 기상변화를 발생시키고 있다. 기후변화로 인해 바다의 수온이 상승함에 따라 빙하가 녹거나 바닷물이 팽창하여 해수면이 상승하게 되는 바, 1990년 대비 2000년대에 동해바다에서는 상승률이 0.07cm/yr이던것이 0.20cm/yr로 나타났으며, 서해바다에서는 0.14cm/yr이던 것이 0.18cm/yr로 나타났고, 남해바다에서는 0.32cm/yr이던 것이 0.34cm/yr 로 평균상승률이 1990년대에 비해 증가하는 것으로 관측되었다. 본 연구에서는 기후변화로 인한 자연재해 피해를 최소화하기 위해 소방방재청의 현행 업무를 중심으로 재해를 예방하기 위한 풍수해 업무별 추진해야할 연구과제들을 조사 제시하고자 하였다. 기후변화에 따른 재난분야의 정책과 관련된 연구적인 측면의 분야를 제시하기 위하여 최근에 나타난 자연재난 피해현상에 대한 원인 및 대책을 기초로 하여, 재난관리분야에서 추진하고 있는 업무를 계승 발전시킴으로써 기후변화로 인한 피해를 예방 또는 최소화 할 수 있는 방향으로 제시하고자 하였다. 기후변화에 따른 소방방재청의 풍수해 재난관리 분야 종합계획을 제시하기 위해 본 연구에서는 기후변화 관련 최근 국내 외의 동향을 먼저 살펴보았다. 1977년부터 2006년까지 우리나라 최근 30년간의 재해연보에 제시되어 있는 시설물별 피해액을 조사하여 시설물 중 피해액이 많은 순으로 주요피해 시설물을 파악하였다. 여기에서 주요피해 시설물로는 하천, 도로, 소하천, 수리, 농경지, 사방 등의 순으로 나타났다. 이러한 주요시설물에 대한 피해현황을 파악하기 위하여 대규모 풍수해 피해에 대한 현황, 원인분석 및 대책이 제시되어 있는 각종 피해조사 보고서, 연구보고서 및 전문 학술지 기사들을 수집 분석하였으며, 수집된 자료를 토대로 각각의 재해피해현상에 대하여 시설물의 피해현상, 원인 및 대책을 분류하여 분석하고자 한다. 재난관리 분야 중 우수유출저감시설 관련 제시된 업무방향을 보면 침투 저류를 위한 우수유출저감시설의 개발연구, 침수위험지구의 지정기준 등급별 방재대책 방안연구, 유역별 재해위험 저감능력의 평가기준 개발, 단위구역별 우수유출저감시설의 확보기준 연구, 우수유출저감시설의 국내 표준화 방안 연구, 우수유출저감시설 설치자에 대한 인센티브 도입방안 연구, 피해지역의 매입을 통한 저류지화 방안 연구, 우수유출저감시설 설치효과의 교육 홍보 및 우수유출저감시설의 국제 표준화 기준 제정 추진 등이 필요할 것으로 조사되었다. 여기에서 제시된 재난관리 업무분야별 많은 연구과제들이 향후 연구할 수 있는 재원확보로 이어져 재난관리의 업무발전에 도움이 될 수 있도록 하여야 하겠으며, 주요 결론으로는 다음과 같다. 첫째, 우리나라는 기후변화에 대해서는 기존에 소극적으로 대응하였으나 기후변화대책기획단을 만들어 적극적으로 대처하고 있으므로 기후변화와 관련된 여러분야가 활성화 될 것으로 판단된다. 둘째, 국외의 기후변화 대응사례에서 보면 시설물의 규모를 볼 때 큰 규모의 예산을 투입하는 것으로 판단되는바, 이는 향후의 불확실한 기후변화에 대비하는 선진적인 판단으로 검토되어야 할 것이다. 셋째, 풍수해 관련 주요업무 8가지에 대하여 추진해야할 업무방향 48개를 선정 제시하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.3
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• pp.754-762
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• 2021

Seamless wireless communication network access technology enables users to guarantee service continuity. Hence, it is necessary for disaster situations in which network service may be interrupted. The Multi-path router is a technology to improve network stability and strengthen field operability, particularly in a disaster environment where network failure can occur by providing high-performance data transmission using multi-communication networks and network security by VPN-based wireless IP. In this paper, a prototype system for an MPR-based wireless communication network was proposed to improve the operation performance for disaster field investigation applications. A comparative experiment was performed on various data transmission performances with the existing single wireless communication network. In addition, another experiment was conducted by measuring the data packet transmission and receiving performance in the existing/new wireless communication system first and then assessing the UDP transmission performance in a single router environment to understand the transmission capability of the new MPR. The experimental results showed that the sending and receiving performance was improved by approximately double that of the existing single wireless communication system. The proposed prototype system is expected to allow users to share and disseminate collected on-site data more quickly and efficiently during a disaster site investigation.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2015.11a
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• pp.162-165
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• 2015

본 연구는 ${\bigcirc}{\bigcirc}$ 공구 공유수면 매립공사 수행 중에 매립토량의 부족이 발생함에 따라 이를 대상으로 원인을 분석하고자 수행하였다. 매립지의 토량부족 원인을 파악하기 위해 설계 및 계측자료를 수집하여 시공 현황을 파악하고 지반조사를 통해 해안지역과 매립지반의 시료를 채취하여 성상분석과 원지반에 대한 공학적 특성을 비교 검토하였다. 특히. 현장 시추조사에 의한 경계면 분석과 토질 종류를 점성토, 사질토, 부유토로 구분하고 침하량 공식에 따라 발생량을 산출하였다. 구역의 구분은 설계 시와 동일한 조건에서 침하량을 계산하였고 설계 시 지반고가 침식과 퇴적으로 인해 일부 변경되어 설계시 지반고와 착공시 지반고를 구분하여 기재하고 각각의 침하량을 비교하였다.