• Title/Summary/Keyword: Flooding signs

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Comparison of inundation patterns of urban inundation model and flood tracking model based on inundation traces (침수 흔적도 기반으로 도시침수 모형과 홍수추적모형의 침수양상 비교)

  • Choi, Jonghwa;Jeon, Jaehyun;Kim, Taehyung;Kim, Byungsik
    • Journal of Korea Water Resources Association
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    • v.54 no.2
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    • pp.71-80
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    • 2021
  • In recent years, the possibility of flooding due to the increase in the incidence of high-frequency rainfall due to abnormal rainfall and the increase in concentrated torrential rain is increasing. Also, the amount of rainwater runoff is increasing due to the increase of the impermeable layer in the city due to the concentration of population due to urbanization and concentration of development. Due to the characteristics of the developed city, it is located in the vicinity of rivers and in the lowlands. For the analysis of inundation in water, using XP-SWMM, which can analyze stormwater pipelines and surface flows, and FLO-2D models that can track flood-sluice curves and rainfall-spill curves, based on hydraulic and hydrological analysis. Inundation analysis was conducted and comparative review was conducted. The patterns of flooding of the two models were compared, and a model suitable for domestic flooding was selected.

Metadata Design Based on Vector Type Geospatial Information Standard for the Collection and Management of Inundation Map (침수지도 수집 및 관리를 위한 벡터형 공간정보 표준 기반의 메타데이터 설계)

  • Sim, Gyu-Seong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.5
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    • pp.42-48
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    • 2016
  • Inundation Maps are used to predict potential areas of flooding through the signs of past flooding and flood inundation analysis for flooding expected in the future, and this has led to the development of various forms of disaster-related services by governments. However, each institution has its own individual scenarios for making maps for spatial expression. Therefore, the type of spatial information is not standardized and has many forms and structures. In this study, we attempted to design the metadata that would allow Inundation Map information to be shared and used in various fields. The international standard, ISO 19115, and the domestic standards, KS X ISO 19115, TTAS.IS - 19115 and TTAS.KO - 10.0139/R1 of TTA, were used in the design to derive an appropriate standard for comparative analysis by dividing into maintenance, constraints, metadata, spatial reference system, identification, and distribution. It is expected that inundation maps will be easier to utilize and distribute among institutions and private companies by systematically collecting and managing them through the metadata design based vector space information standard developed in this study.

Epidemiological survey of Giardia spp. and Blastocystis hominis in an Argentinian rural community

  • Minvielle, Marta-Cecilia;Pezzani, Betina-Cecilia;Cordoba, Maria-Alejandra;De Luca, Maria-Marta;Apezteguia, Maria-Carmen;Basualdo, Juan-Angel
    • Parasites, Hosts and Diseases
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    • v.42 no.3
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    • pp.121-127
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    • 2004
  • The aim of this study was to relate personal data, socio-cultural and environmental characteristics, and the presence of symptoms/signs with the frequencies of Giardia spp. and Blastocystis hominis among a rural population in Buenos Aires Province, Argentina. Of the surveyed population (350), 3.7% were infected with only Giardia spp. or 22.9% with B. hominis, and 2.3% were infected with both protozoa. The frequency of infection according to sex; 6.1% of males were infected and 1.6% of females by Giardia spp., 26.7% and 19.5% by B. hominis, and 2.4% and 2.2% by both parasites, respectively. Giardia spp. was detected in only three adults (over 14 years), but B. hominis was more frequent in adults than in children. The prevalences of these protozoa in this community are lower than those reported by other Argentinean studies, which is probably associated with the low density of the studied population ($5.95{\;}inhab/\textrm{km}^2$). Statistical analysis revealed that a male sex, flooding of the home, the use of a latrine, and an abdominal pain were correlated with the presence of these parasites, which indicate the importance of these factors in rural communities.