Japan Geoscience Union Meeting 2009 Presentation List
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IODP for Geohazard Mitigation
IODP for Geohazard mitigation: Estimation of rupture area and fault models for historical and pre-historical earthquakes by using submarine event deposit detected from ocean drilling survey Masanobu Shishikura and Yuichi Namegaya Geological Survey of Japan, AIST, 305-8576 Tsukuba, Japan (Corresponding: [email protected]) Abstract Constructing precise fault model of historical and pre-historical subduction zone earthquakes is important for evaluation and mitigation of seismic and tsunami hazards. Because parameters for constraining the model of further past events essentially lack due to limited records, it is necessary to obtain paleoseismological data by offshore piston coring and drilling. Detecting and identifying event deposit such as seismic turbidite, rupture extent can be constrained along the subduction zone. 1. Introduction Fault model is a foundation to evaluate future seismic phenomena such as strong ground motion, crustal movement, tsunami inundation and so on. To estimate fault models of historical or pre-historical earthquakes, we usually try to know their precise rupture area. Since there are no instrumental observation data for estimating them, it must be identified of the magnitude and distribution of crustal movement and tsunami by analyzing historical records and geomorphological and geological traces. In other words, these evidences are unique indicator, and can provide good parameters to estimate rupture area of such earthquakes. If the rupture area is located on coastal region, it is relatively easy to recognize crustal movement from relative sea level change (abrupt uplift and subsidence) that has been recorded in such as marine terrace. However, most of the rupture area of interplate earthquake along subduction zone is located off coast. -
Three Large Historical Landslide Dams and Outburst Disasters in the North Fossa Magna Area, Central Japan
International Journal of Erosion Control Engineering Vol.5, No.2, 2012 Disaster Report Three Large Historical Landslide Dams and Outburst Disasters in the North Fossa Magna Area, Central Japan Kimio INOUE1, Toshio MORI2 and Takahisa MIZUYAMA3 1Sabo Frontier Foundation (Sabo-Kaikan, Hirakawa-cho 2-7-4, Chiyoda-ku, Tokyo 102-0093, Japan) Email: [email protected]) 2Sabo Frontier Foundation (Sabo-Kaikan, Hirakawa-cho 2-7-4, Chiyoda-ku, Tokyo 102-0093, Japan) 3Division of Forest Science, Graduate School of Agriculture, Kyoto University (Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan) Large landslides or debris flows caused by heavy rainfall or earthquakes often block rivers in mountainous areas and form landslide dams. The area upstream of the landslide dam is submerged under water and the downstream area is flooded when the landslide dam breaks. In recorded history, as many as 22 landslide dams have formed upstream of the Shinano River and the Hime River, in the northern part of Nagano Prefecture in central Japan, and all except three have subsequently broken. This abundance of landslide dams is probably caused by the geotectonic background of this area, which is located at the western end of the “Fossa Magna” major tectonic line. In this study, we examined three large historical landslide dams and outburst disasters in the north Fossa Magna area. Keywords: Landslide Dam, Debris Avalanche, Tobata Landslide, Zenkoji Earthquake, Mt. Iwakura Landslide 1. INTRODUCTION Table 1 List of landslide dams documented in northern Nagano Prefecture (Mizuyama et al, 2011) No. Landslide Dam Date Formed Cause Failure Timing River We have studied the history, formation, and 1 Aoki Lake 30,000 years ago Unknown Continuing today Takase R. -
Intraplate Earthquakes in North China
5 Intraplate earthquakes in North China mian liu, hui wang, jiyang ye, and cheng jia Abstract North China, or geologically the North China Block (NCB), is one of the most active intracontinental seismic regions in the world. More than 100 large (M > 6) earthquakes have occurred here since 23 BC, including the 1556 Huax- ian earthquake (M 8.3), the deadliest one in human history with a death toll of 830,000, and the 1976 Tangshan earthquake (M 7.8) which killed 250,000 people. The cause of active crustal deformation and earthquakes in North China remains uncertain. The NCB is part of the Archean Sino-Korean craton; ther- mal rejuvenation of the craton during the Mesozoic and early Cenozoic caused widespread extension and volcanism in the eastern part of the NCB. Today, this region is characterized by a thin lithosphere, low seismic velocity in the upper mantle, and a low and flat topography. The western part of the NCB consists of the Ordos Plateau, a relic of the craton with a thick lithosphere and little inter- nal deformation and seismicity, and the surrounding rift zones of concentrated earthquakes. The spatial pattern of the present-day crustal strain rates based on GPS data is comparable to that of the total seismic moment release over the past 2,000 years, but the comparison breaks down when using shorter time windows for seismic moment release. The Chinese catalog shows long-distance roaming of large earthquakes between widespread fault systems, such that no M ࣙ 7.0 events ruptured twice on the same fault segment during the past 2,000 years. -
Geography & Climate
Web Japan http://web-japan.org/ GEOGRAPHY AND CLIMATE A country of diverse topography and climate characterized by peninsulas and inlets and Geography offshore islands (like the Goto archipelago and the islands of Tsushima and Iki, which are part of that prefecture). There are also A Pacific Island Country accidented areas of the coast with many Japan is an island country forming an arc in inlets and steep cliffs caused by the the Pacific Ocean to the east of the Asian submersion of part of the former coastline due continent. The land comprises four large to changes in the Earth’s crust. islands named (in decreasing order of size) A warm ocean current known as the Honshu, Hokkaido, Kyushu, and Shikoku, Kuroshio (or Japan Current) flows together with many smaller islands. The northeastward along the southern part of the Pacific Ocean lies to the east while the Sea of Japanese archipelago, and a branch of it, Japan and the East China Sea separate known as the Tsushima Current, flows into Japan from the Asian continent. the Sea of Japan along the west side of the In terms of latitude, Japan coincides country. From the north, a cold current known approximately with the Mediterranean Sea as the Oyashio (or Chishima Current) flows and with the city of Los Angeles in North south along Japan’s east coast, and a branch America. Paris and London have latitudes of it, called the Liman Current, enters the Sea somewhat to the north of the northern tip of of Japan from the north. The mixing of these Hokkaido. -
SMIP13 Seminar Proceedings OBSERVATIONS from the APRIL 20, 2013 LUSHAN COUNTY, YA'an CITY, SICHUAN PROVINCE, CHINA EARTHQUAKE
SMIP13 Seminar Proceedings OBSERVATIONS FROM THE APRIL 20, 2013 LUSHAN COUNTY, YA’AN CITY, SICHUAN PROVINCE, CHINA EARTHQUAKE Marshall Lew AMEC Environment & Infrastructure, Inc. Los Angeles, California Abstract The April 20, 2013 Lushan earthquake followed the 2008 Great Wenchuan earthquake by almost five years. Although the rupture also started in the Longmenshan fault zone, the Lushan earthquake is not an aftershock. Although similar damage and disruptions to infrastructure and society occurred, it was of a smaller scale and not unexpected due to the short time for the lessons from Wenchuan to be applied. There were some examples of lessons learned and the strong motion dataset obtained in this event will prove valuable in assessing how effective the actions taken have been. The visual observations were made on May 27 and 28, 2013 in Lushan. Introduction On April 20, 2013, at 8:02 am (Beijing Time), an earthquake occurred in Lushan County of Ya’an City in Sichuan Province in southwestern China. The epicenter was located at 30o 17’ 02” N and 102o 57’ 22” E, about 120 km from the major city of Chengdu; see Figure 1. Ya’an City is a prefecture level city in the western part of Sichuan Province and has a population of about 1.5 million people and is the location of one of China’s main centers for the protection of the endangered giant panda. Sichuan Province is known as the “Province of Abundance.” The province is a leading agricultural region of China and the province is also very rich in mineral resources, including large natural gas reserves. -
Off-Track Betting on Your Doorstep *Charges for Pay-Seats, Etc., Are Valid As of Nov
Ashiyu foot bath at WINS Isawa Excel Floor of WINS Shin-Yokohama Carousel at WINS Shin-Shirakawa WINS Kyoto Entrance to WINS Namba WINS Sasebo in Huis ten Bosch WINS – off-track betting on your doorstep *Charges for pay-seats, etc., are valid as of Nov. 13th, 2009. Did you know that you can place a bet without going to a racecourse? Just pop in to your local WINS off-track betting facility! With branches all over Japan, WINS are also convenient places for meeting spot or just taking a coffee break. Some WINS facilities are set up with comfortable sofas and PC and monitor for your personal use, allowing you to enjoy the whole day at the races! Of course, WINS also make payouts on winning bets. WINS Sapporo(some pay-seats) WINS Shizunai WINS Kushiro WINS Ginza-dori WINS Korakuen (some pay-seats) WINS Kinshicho (some pay-seats) Dodo-Biratori Shizunai Route JR Senmo Main Line Main Senmo JR ▲Sapporo Stn. Homac ▼ 391 Subway Ryogoku Ichikawa ▼ Hokkaido Sales WINS Posful Fujiya Toei Subway Hibiya Line Ginza Stn. Police box Kasuga Stn. Kinshicho Stn. WINS Sapporo Toho Subway Line Shizunai Kushiro Loop Road Setsuribashi Oedo Line JR Sobu Line Cosmo● Shizunai River Kushiro Timber Building B Higashi Ginza Mitsukoshi ● ● ● Subway Fire Station Reservoir ● Korakuen Stn. JR Yurakucho Stn. Hanzomon Line Stn. Dept. Store Expressway ● Suidobashi Stn. Plaza ▲ Miyuki-dori 44 Arche● ●Senshu-An Seiko Mart ● Shizunai Kushiro Rosai● Kushiro Ginza Stn. Tokyo Dome City Shopping Kinshicho Stn. Ginza-dori Kamotsu Showa-dori Attractions T street Police Hospital Yotsume-dori Municipal Nemuro o Marunouchi Line Subway e ● Jidosha Matsuya Dept. -
Chugoku・Shikoku Japan
in CHUGOKU・SHIKOKU JAPAN A map introducing facilities related to food and agriculture in the Chugoku-Shikoku Tottori Shimane Eat Okayama Hiroshima Yamaguchi Stay Kagawa Tokushima Ehime Kochi Experience Rice cake making Sightseeing Rice -planting 疏水のある風景写真コンテスト2010 Soba making 入選作品 題名「春うらら」 第13回しまねの農村景観フォトコンテスト入賞作品 第19回しまねの農村景観フォトコンテスト入賞作品 Chugoku-shikoku Regional Agricultural Administration Office Oki 26 【Chugoku Region】 7 13 9 8 Tottori sand dunes 5 3 1 Bullet train 14 2 25 4 16 17 11 Tottori Railway 36 15 12 6 Izumo Taisha 41 Matsue Tottori Pref. Shrine 18 Kurayoshi Expressway 37 10 Shimane Pref. 47 24 45 27 31 22 42 43 35 19 55 28 Iwami Silver Mine 48 38 50 44 29 33 34 32 30 Okayama Pref. 39 23 20 54 53 46 40 49 57 Okayama 21 Okayama 52 51 Kurashiki Korakuen 59 Hiroshima Pref. 60 64 79 75 76 80 62 Hiroshima Fukuyama Hagi 61 58 67 56 Atom Bomb Dome Great Seto Bridge 74 Yamaguchi Pref.Yamaguchi Kagawa Pref. 77 63 Miyajima Kintaikyo 68 69 Bridge Tokushima Pref. Shimonoseki 66 65 72 73 Ehime Pref. 70 71 78 Tottori Prefecture No. Facility Item Operating hours Address Phone number・URL Supported (operation period) Access language Tourism farms 1206Yuyama,Fukube-cho,Tottori city Phone :0857-75-2175 Mikaen Pear picking No holiday during 1 English 味果園 (Aug.1- early Nov.) the period. 20 min by taxi from JR Tottori Station on the Sanin http://www.mikaen.jp/ main line 1074-1Hara,Yurihama Town,Tohaku-gun Phone :0858-34-2064 KOBAYASHI FARM Strawberry picking 8:00~ 2 English 小林農園 (early Mar.- late Jun.) Irregular holidays. -
Earthquake-Resistant Design for Architects Revised Edition to Whom This Report May Interest
Earthquake-resistant Design for Architects Revised edition To whom this report may interest, There are many earth quake prone countries in this world, not only Japan Therefore, at various occasions we were requested to explain our efforts and initiatives for reducing the risk of future earth quakes. After the Great Hanshin Earthquake, we had studied various methods to reduce the damages to ensure inhabitants lives, through collaborations of architects, structural engineers, building mechanical engineers and various specialists. Those considerations were realized in the book “Taishinkyohon” by the Japan Institute of Architects. The book was also revised after the Great East Japan Earthquake experiences. Owing to the language barriers, we are not able to explain easily our initiatives to outsiders. Therefore, we had tried to publish it in an English edition. Nevertheless through economic diculties, English editions had not been translated until now. In 2014, NPO called Japan Aseismic Safety Organization (JASO), decided to donate for the English translation, and furthermore their members donated for editing in English to form this report as well. A free report with internet download http://www.jaso.jp/ Since original Japanese book was published by publisher Shokokusha in Tokyo who still has the right to publish this book, we finally agreed that we would not sell commercially, but disperse only as a delivered free booklet with internet downloads. Therefore, anyone who likes to study is able to download from the HP of JASO who is holding their -
Nature Conservation Bureau, Ministry of the Environment
⑮ Fuji-Hakone-Izu National Park ⑨ Bandai-Asahi National Park SOYA STRAIT ① Rishiri-Rebun-Sarobetsu National Park REBUN Is. T Designation: 1936/02/01 Designation: 1950/09/05 T SOYA B. Designation: 1974/09/20 This is the northernmost national park in Japan. Mt. Fuji, a World Cultural Heritage site inscribed in This park is composed of many mountains. Mt. RISHIRI Is. STRAI UN STRAI B Mt.Rishiri June 2013, rises high in a vast stretch of forests Dewa-Sanzan is famous for mountain worship, Mt. IRI Mt. Rishiri soars majestically above the sea. National Parks of Japan ⑧ Sanriku Fukko National Park RE H Rebun Island has many alpine plants such as and several lakes. The Hakone area features Asahi, Mt. Iide and Mt. Bandai are also located (Sanriku Reconstruction National Park) RIS 1721 Mt.Horoshiri Rebunsou (Oxytropis megalantha). Sarobetsu several volcanoes, volcanic vents and lakes. Izu within the park boundaries. The view of Urabandai Designation: 1955/05/02 ①RISHIRI-REBUN- Peninsula offers scenic mountains, seashores, and Lake Inawashiro is beautiful. This park is sur- Plain, abundant in marsh plants, and Nature Conservation Bureau, Ministry of the Environment and a chain of characteristic islands in the ocean, rounded by mountains, forests and a lot of lakes. This park extends for 250 km from Kabushima in SAROBETSU N.P.427 Tonbatsu Riv. Wakasakanai' s dunes contribute to the exciting Aomori prefecture to Oshika Peninsula in Miyagi landscape. Izu-shichito. Antelopes and black bears live in this park. Teshio Riv. prefecture. Its northern part is a coastline composed of uninterrupted dynamic cliffs, while ⑯ Chubusangaku National Park ⑩ Nikko National Park its southern part forms a delicately-rugged (Chubu Mountains National Park) Designation: 1934/12/04 coastline. -
T He Sp Lendour of the Middle Jo M on C Ulture
* 42 Ilona Bausch THE SPLENDOUR OF THE MIDDLE JOMON CULTURE: ULTURE CERAMICS FROM THE CENTRAL JAPANESE HIGHLANDS C The Japanese Jomon period, characterised by a prehistoric hunter- gatherer society with a vigorous material culture, is particularly noted for its long-lasting ceramic traditions. Currently enjoying great popularity in ON Japan, the Jomon culture remains largely unknown in Europe. This is due to its absence from most Japanese collections outside Japan – despite the M efforts of several European museums in the 2000s to invite temporary exhibitions with representative Jomon ‘national treasures’ loaned from O various Japanese museums.1 As it is impossible to do full justice to the J regional and temporal diversity within the Jomon culture, this essay will introduce the most salient general aspects before focusing on the the Highlands in Central Honshu, an area that produced distinctive ceramics with evocative designs during the Middle Jomon phase (circa 3520-2470 BC) – to provide a glimpse into the variety of Jomon forms and iconography. A general background to the Jomon period (13,350-400 BC) The first inhabitants of Japan, and probable ancestors of the Jomon, were modern humans who arrived in the archipelago during the Late Pleistocene Ice Ages, about 40,000 to 35,000 years ago, via Okinawa and Hokkaido. They discovered local stone sources for manufacturing hunting tools, including obsidian (a volcanic glass highly suitable for sharp-edged tools such as spear points), and traded them over long distances. Around 16,500 years ago, nomadic hunters in Japan first started making pottery. This is one of the world’s oldest ceramic traditions, roughly contemporaneous to, but probably independent from similar developments in China and Siberia.2 The added possibilities for cooking and storage proved to be a great boon, and pottery vessels soon became a permanent feature, making up a large proportion of finds at any Jomon excavation. -
Flood Loss Model Model
GIROJ FloodGIROJ Loss Flood Loss Model Model General Insurance Rating Organization of Japan 2 Overview of Our Flood Loss Model GIROJ flood loss model includes three sub-models. Floods Modelling Estimate the loss using a flood simulation for calculating Riverine flooding*1 flooded areas and flood levels Less frequent (River Flood Engineering Model) and large- scale disasters Estimate the loss using a storm surge flood simulation for Storm surge*2 calculating flooded areas and flood levels (Storm Surge Flood Engineering Model) Estimate the loss using a statistical method for estimating the Ordinarily Other precipitation probability distribution of the number of affected buildings and occurring disasters related events loss ratio (Statistical Flood Model) *1 Floods that occur when water overflows a river bank or a river bank is breached. *2 Floods that occur when water overflows a bank or a bank is breached due to an approaching typhoon or large low-pressure system and a resulting rise in sea level in coastal region. 3 Overview of River Flood Engineering Model 1. Estimate Flooded Areas and Flood Levels Set rainfall data Flood simulation Calculate flooded areas and flood levels 2. Estimate Losses Calculate the loss ratio for each district per town Estimate losses 4 River Flood Engineering Model: Estimate targets Estimate targets are 109 Class A rivers. 【Hokkaido region】 Teshio River, Shokotsu River, Yubetsu River, Tokoro River, 【Hokuriku region】 Abashiri River, Rumoi River, Arakawa River, Agano River, Ishikari River, Shiribetsu River, Shinano -
Ancient Jomon of Japan Junko Habu Index More Information
Cambridge University Press 0521772133 - Ancient Jomon of Japan Junko Habu Index More information Index Abe, Yoshiro, 77 Ando, Norikazu, 227 Abiko, Shoji, 38, 230, 231 Angin, 215, 218 Acanthopagrus schlegeli (black porgy), 73, Anoh site (Shiga Prefecture), 64 248 Aomori Prefecture, 14, 28, 32, 36, 40, 86, Accelerator Mass Spectrometry, see AMS 108, 110, 113, 118, 119, 124, 129, Acorns, 59, 60, 63, 64–66, 70, 78, 99, 131, 159, 166, 171, 177, 185, 215, 250 218, 230, 233, 253 Activity sphere, 83 Aomori-ken Kyoiku Iinkai, 131 Adzes, 236, see also Axes; Axes/adzes Aota site (Niigata Prefecture), 220 edge-ground, 36 Aphananthe aspera (mukunoki), 236 Aesculus turbinata (buckeye), 59 Arakawa River (Tokyo), 77 Affluent hunter-gatherers, 119, 120, 243 Arakawa River (Aomori), 185 Agency, 201, 214 Araya site (Niigata Prefecture), 247 Aichi Prefecture, 139, 172 Araya style burins, see Burins, Araya style Aikens, Melvin, 57 Architectural materials, 218 Ainu, 12, 46, 51–52, 60, 84, 176 Arctic, 12, 121, 129, 244 Ainu Cultural Promotion Law, 52 Arctium (burdock), 59, 71, 118 Akasakata site (Iwate Prefecture), 227 Ario phase, 181 Akayama Jin’ya-ato site (Saitama Arrowheads, 29, 93–96, 98, 99, 114, 125, Prefecture), 64, 235 177, 183, 189, 221, 230, 246, 247, Akazawa, Takeru, 57, 72, 73, 77–78, 84 248, 252 Akita Prefecture, 59, 141, 184, 227, 230 Asian population Akyu site (Nagano Prefecture), 181, 182, archaic, 50 183 new, 50, 52 Alaska, 10, 85, 129, 130, 249 Ashibetsu Nokanan site, 188 Alcoholic beverages, 208, see also Fruit Asphalt, 114, 130, 201, 221,