著者

Idham Riyando MOE Shuichi KURE Nurul Fajar JANURIYADI Mohammad FARID Keiko UDO So KAZAMA Shunichi KOSHIMURA

出版者

公益社団法人 土木学会

雑誌

土木学会論文集G(環境) (ISSN:21856648)

巻号頁・発行日

vol.72, no.5, pp.I_283-I_289, 2016 (Released:2017-02-20)

参考文献数

13

被引用文献数

4 8

---

Floods are considered to be one of the major natural disasters in Indonesia. Jakarta in Indonesia has experienced many floods in the past, such as those in 1996, 2002, 2007 and 2013. In this paper, land subsidence problems contributing to flooding in Jakarta were described and historical and future land subsidence situations in Jakarta were reconstructed and projected using a simple linear extrapolation method. Also, those land subsidence impacts were analyzed by using a flood inundation model. As a result of analysis, it was found that the land subsidence in Jakarta contributed by 17.6% to increase of the total flood inundation volume from 1983 to 2013. Also, it was estimated that the land subsidence situations for the future period of 2050 would increase the flood inundation volume by 10.3% compared to those of 2013. However, impacts from land use/cover changes on the flood inundation were found to be much greater than those from land subsidence in Jakarta. It should be noted that the land subsidence affects flooding from the coast when high waves and surges occur but those effects were not considered in this paper.

著者

風間 聡 So KAZAMA 土木学会緊急災害調査部門派遣調査団:東北大学工学研究科土木工学 Graduate School of Engineering Tohoku University

出版者

日本自然災害学会

雑誌

自然災害科学 = Journal of Japan Society for Natural Disaster Science (ISSN:02866021)

巻号頁・発行日

vol.19, no.4, pp.493-500, 2001-02-28

参考文献数

5

被引用文献数

1

---

The lower Mekong River flooded from July to December in 2000. Especially, Cambodia and Vietnam were serious on inundation. The numbers of victims were 347 in Cambodia and 448 in Vietnam. The amounts of damage were 80 million and 350 million US dollars in Cambodia and in Vietnam, respectively. Water level reached to a record-breaking height at PhnonPenh. The main reasons of this flood were that heavy rainfall began earlier and two tropical cyclones approached to the catchment area. Other reasons were that some portions of dikes were changed to bridge to protect roads, Colmatage worked as intake from the main river and sedimentation deposited in channels and canals. Governments and international organizations are designing and planning some projects for flood control.

著者

Keisuke Ono So Kazama Seiki Kawagoe Yoshiyuki Yokoo Luminda Gunawardhana

出版者

Japan Society of Hydrology and Water Resources (JSHWR) / Japanese Association of Groundwater Hydrology (JAGH) / Japanese Association of Hydrological Sciences (JAHS) / Japanese Society of Physical Hydrology (JSPH)

雑誌

Hydrological Research Letters (ISSN:18823416)

巻号頁・発行日

vol.5, pp.69-72, 2011 (Released:2011-11-02)

参考文献数

11

被引用文献数

3 7

---

A gigantic earthquake with a magnitude of 9.0, the maximum ever recorded in Japan, struck the Tohoku region of Japan on 11 March, 2011. As a result, as many as 745 reservoirs in Fukushima prefecture were damaged. The failure of the earth-fill dam at the Fujinuma reservoir in Fukushima prefecture resulted in eight deaths in a village downstream. This was only the second such dam to fail completely in the recorded history of Japan, the first being Mannou Lake dam. The failure was caused by the Ansei Nankai earthquake in 1854. According to official records, of the 210,000 reservoirs in Japan, at least 20,000 dams are vulnerable to future earthquakes. Therefore, it is imperative that the failure mechanism of the Fujinuma reservoir be understood. As such, we developed several theories to explain what happened. Adherence to recommendations made in this report will reduce the potential for damage in future catastrophic events.