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Title Rb-Sr Geochronology and Petrogenesis of the Late
Rb-Sr Geochronology and Petrogenesis of the Late Mesozoic Title Igneous Rocks in the Inner Zone of the Southwestern part of Japan Author(s) Seki, Tatsuya Memoirs of the Faculty of Science, Kyoto University. Series of Citation geology and mineralogy (1978), 45(1): 71-110 Issue Date 1978-07-31 URL http://hdl.handle.net/2433/186625 Right Type Departmental Bulletin Paper Textversion publisher Kyoto University MEMolRs oF THE FAcuLTy oF SclENcE, KyOTO UNIvERSITy, SERIES oF GEoL. & MINERAL., Vol. XLV, No. 1, pp. 71-110, 1978 Rb-Sr Geochronology and Petrogenesis of the Late Mesozoic Igneous Rocks in the Inner Zone of the Southwestern Part of Japan By Tatsuya SEKi* (Received August 30, lq. 77) Abstract Rb-Sr isotopic measurements have been made on Cretaceous intermediate-acid igneous rocks from four districts, Yamaguchi, Hime.ii, Koto and Nohi, ofthe inner zone ofsouthwestJapan, and more than ten whole rock and internal isochrons have been obtained. Isochron ages of about 110 m.y. have been obtained from volcanic rocks of all of four districts. Another age of volcanic activity is about 70 m.y. The age ofgranitic rocks obtained is about 80-90 m.y. Initial Sr isotope ratios range from O.7051 to O.7103. The variation of these initial Sr ratios is more closely related with the crustal structure than with the age. Rb/Sr ratios (O.05-24) are higher than those of other calc-alkaline rocks of circum-Pacific regions. These data have been interpreted as that the parental magmas were generated from old lower crustal materials. Local geochronology, space-time relations of the igneous activity, the age of the "Roseki" deposits and the relation between age and paleomagnetism are discussed in detail. -
Annex VIII Casestudy0502 Hid
IEA Hydropower Implementing Agreement Annex VIII - Hydropower Good Practices: Environmental Mitigation Measures and Benefits Case Study 05-02: Water Quality – Hida River System, Japan Key Issues: 5- Water Quality 14- Development of Regional Industries Climatic Zone: Cf: Temperate Humid Climate Subjects: - Selective intake, techniques to operate a group of dams Effects: - Mitigation of turbid water persistence Project Name: Hydropower Dams in Hida River System Country: Gifu Prefecture, Japan (Asia) (N35˚56’ – N36˚4’, E137˚15’ – 29’) Implementing Party & Period - Project: Chubu Electric Power Co., Inc. 1969 (Completion of construction) - - Good Practices: Chubu Electric Power Co., Inc. 1983 (Commencement of operation) - Key Words: turbid water, selective intake, operation of reservoirs Abstract: In the Hida River basin, there are several power stations, and turbid water persistence became a problem shortly after the completion of the Asahi Dam in 1953. To solve this problem, selective intake facilities were constructed at the Asahi Dam and the Takane No.1 Dam. Using these facilities, coupled with power plant operation at 4 dams in the Hida River, the persistent turbidity has been gradually decreasing. 1. Outline of the Project The Hida River is the Kiso River System’s largest tributary with a total watercourse length of 134km and a total catchment area of 2,177m 2 that originates in Mt. Norikura and Mt. Ontake located in the southernmost part of the North Japan Alps and flows southward meeting many tributaries including the Akigami and Maze Rivers to finally join the Kiso river in Mino Kamo City (Fig.-1). Many power source development projects have been conducted in the Hida river basin since long ago, and currently the total number of power stations and the total of the permitted/approved maximum outputs are 23 and approximately 1.14 million kW, respectively (Table-1). -
The Hida Guide 2012―2013
飛 騨 The Hida Guide 2012―2013 Hida is the northernmost and largest of the five regions of Gifu Prefecture. Situated in the heart of the Japanese Alps, it is an entirely mountainous region, famous for its natural beauty, its skiing, its onsens, and its many traditional handicrafts. The main rivers in Hida are the Miyagawa (宮川), which flows north into the Sea of Japan, and the Hida River (飛騨川) which flows south into the Pacific. Hida’s elevation and mountains shelter it somewhat from the rest of Gifu’s murderous heat and humidity and the summers, and pile on the snow and cold in the winters. The first kanji in Hida, 飛 (ひ), means to fly. The second, 騨 (だ), means a dappled grey horse, although it’s no longer commonly used. The four municipalities that comprise Hida, from south to north, are: 下呂市 げろし Gero City 高山市 たかやまし Takayama City 白川村 しらかわむら Shirakawa Village 飛騨市 ひだし Hida City HIDA’S LOCATION IN GIFU PREFECTURE: Hida is hemmed in on all sides by the Japanese Alps. To get anywhere else in Japan, you’ll need to go over, through and under them. Most of Hida is actually closer to Toyama City, on the coast of the Sea of Japan, than it is to Gifu City or Nagoya. Matsumoto, in Nagano Prefecture is about two hours to the east by car or bus. Tokyo, Osaka, and Kyoto are all about five hours from Hida by bus. FUN IN HIDA Outdoors In the summer, there are almost infinite places to hike. -
JICA Handbook for Mainstreaming Disaster Risk Reduction (DRR)
JICA Handbook for Mainstreaming Disaster Risk Reduction (DRR) (Forethought to DRR for Development Projects) MARCH 2015 Japan International Cooperation Agency JICA SUNCOH CONSULTANTS Co., Ltd. EARTH SYSTEM SCIENCE Co., Ltd. JICA Handbook for Mainstreaming Disaster Risk Reduction (DRR) (Forethought to DRR for development projects) 1. THE DEVELOPMENT OF THE HANDBOOK ................................................... 1 Background of the Development of the Handbook 1 Purpose of the Development of the Handbook 2 Structure of the Handbook 2 2. ABOUT “MAINSTREAMING DISASTER RISK REDUCTION” ....................... 4 Global Trend of 4 Significance and Effects of 6 3. METHOD OF DISASTER RISK SCREENING AND SCOPING FOR JICA'S PROJECTS ................................................................................................................ 9 Actions by JICA in Disaster Risk Reduction 9 Value of Forethought for Disaster Risk Reduction 10 Development of Economic Simulation Model for Investment for DRR 14 Method for Disaster Risk Reduction Forethought 15 Reduction of Disaster Risk 17 Improvement of adaptation abilities for natural hazard and disaster 17 Improvement of capabilities about local disaster risk reduction 21 Forethought to DRR in Development Projects 22 4. JICA’S DISASTER RISK SCREENING AND SCOPING FOR DEVELOPMENT PROJECTS: IMPLEMENTATION METHODS IN PROJECTS ................................. 25 Flow of Disaster Forethought in Projects and Positioning of the Handbook 25 Overview 25 Flow of Disaster Risk Screening and Scoping 27 Screening -
Volume 34: Summer 2017
GO GIFU Gifu Prefecture Event and Tourism Newsletter Vol. 34 Summer 2017 The majestic mountains of the Japanese Alps, where you can enjoy some terrific views and relaxing hot springs. Picture taken from the Hodakaso Sangetsu Japanese Inn, Okuhida Hot Spring Village. Spring was short and sweet, and in the blink of an eye we are diving head-first into the sweltering Gifu summer. Japan is famous for its hot and humid summers, and Gifu prefecture is consistently up among the hottest of the hot. But before jumping ship to Hokkaido, let’s take a brief look at some of the festivals and events going on in Gifu that you can only see during the summer! Morning Markets 朝市 Most people in Gifu prefecture beat the heat by completing all outdoor activities in the morning, why not join them and travel to one of the morning markets located in Takayama or Gero City. Both Takayama and Gero are located in the northern Hida region of Gifu prefecture where the higher elevation ensures cooler weather than what you would find in the south. At these markets you will find locally grown produce and hand-made crafts (among other things) all being sold by the farmers and craftsmen themselves. There aren’t too many of these types of markets in Japan, and it provides a great Takayama Markets opportunity to interact with the locals. On an average day you Period: All year will find both tourists and locals in attendance. Hours: 7:00am-12:00pm (During winter starts at 8:00am) Gero City Ideyu Market Miyagawa Market Location: In between the Period:April~Late November Yayoibashi Bridge and Kajibashi Bridge along the Hours: 8:00am ~ 12:00pm Miyagawa River on the same side as the Old Quarter, Location: Near the entrance of the Gero a 15-minute walk from JR Takayama Station. -
The Electric Power Industry of Japan, Plant Reports
RI^S ^ "^ Given By TT. S. STJPT. OF DOCUMENTS 3^ THE UNITED STATES STRATEGIC BOMBING SURVEY The Electric Power Industry OF Japan (Plant Reports) Electric Power Division iT i rw May 1947 THE UNITED STATES STRATEGIC BOMBING SURVEY The Electric Power Industry OF Japan (Plant Reports) Electric Power Division Dates of Survey 9 October— 3 December 1945 Date of Publication: May 1947 V-O-^l JUL 19 1947 This report was written primarily for the use of the U. S. Strategic Bombinp; Survej' in tlie jjrejjaration of further n^ports of a more comprehensive nature. Any conclusions or opinions expressed in this report must be considered as limited to the specific material covered and as subject to furth{M' interpretation in the lifiht of further studies conducted by the Survey. II FOREWORD The United S(;itos Strategic Boiuhiiifi; Survey was civilians, 350 officers, and 500 enlisted men. 'i'lie established by tlie Secretary of War on 3 November military segment of the organization was drawn 1944, iiursuant to a directive from ffie late Presideiil from the Army to the extent of 60 percent, and from Roosevelt. Its mission was to conduct an impartial Navy to the extent of 40 percent. Both the Army and expert study of the effects of our ari'ial atiaek and the Navy gave the Survey all possible assistance on Oermany, to be used in connection with air in furnishing men, supplies, transport, and informa- attacks on Japan and to establish a basis for evalu- tion. The Svu'vey operated from headtiuarters ating the importance and potentialities of air power established in Tokyo early in September 1945, with as an instrument of military strategy for planning subheadquarters in Nagoya, Osaka, Hiroshima, and the future development of the United States armed forces and for determining future economic policies Nagasaki, and with mobile teams operating in othcM- with resjiect to the national defense. -