2000
VOL.109 No.6
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表紙写真 |
| 高輝度光源 SPring-8 と超高圧ステーションによる in situ スピネル−ポストスピネル分解反応の実験結果 | |
理化学研究所と原子力研究所が播磨科学公園都市に建設した世界最高性能のリング加速器型高エネルギーエックス線発生装置 SPring-8 (背景に写っているリング型の建築物：左にある駐車場の車の大きさと比較してほしい)． それから発生するエックス線を引き入れて，極微少試料の結晶構造などを超高圧状態のままに測定できるように設計された超高圧ステーション SPEED1500 を用いて得られた，in situ 観察によるスピネル−ポストスピネル平衡曲線 (手前)． 新しく決定された精度の高い平衡曲線は，従来より 2GPa ほど低い圧力となる． この結果，その相平衡境界の深さは，地球内部の地震学的に決定された下部マントル・遷移層境界 660 km より，約 60 km ほど浅くなる (Irifune et al., 1998; 本誌，加藤ほか論文参照)． このことは 660 km 境界が上記の相変化とする現在の我々の理解を覆し，地球の層構造の起源について本質的な再検討を迫っている． 鳥海光弘 (東京大学)，入舩徹男 (愛媛大学) |
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| CONTENTS | ||||||
| Special Issue on "Leading Edge of Earth Science Technology" | ||||||
| Shoichi OSHIMA | Intrroduction to the Special Issue on“Leading Edge of Earth Science Technology" |
825-826
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| Hironobu HYODO, Tetsumaru ITAYA and Takaaki MATSUDA | Laser Microprobe 40Ar/39Ar Age Dating |
827-835
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| Motoo ITO and Hisayoshi YURIMOTO | Isotopography―Frontier of Cosmo and Geochemistry Developed by SIMS― |
836-844
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| Akira TSUCHIYAMA, Kentaro UESUGI and Tsukasa NAKANO | A Study of Three-dimensional Structures of Rocks and Minerals Using a High-resolution X-ray CT Method−Primitive Materials in the Solar System and Chondrules |
845-858
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| Eiji ITO | Sintered Diamond and Development of Lower Mantle Science |
859-867
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| Takumi KATO, Hidenori TERASAKI and Tomoaki KUBO | Transport Properties of Earth Material―New Insights on Science of the Earth's Interior― |
868-873
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| Akira ASADA | Multi-beam Echo Sounding and Seafloor Imaging |
874-884
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| Ryoichi IWASE | Technology of Deep Sea Research―Manned Submersibles andROVs― |
885-899
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| Tamaki URA | Direction of Development of Autonomous Underwater Vehicles |
900-906
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| Kiyoshi SUYEHIRO | Deep Sea Borehole Observatories and Earth Science |
907-919
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| Junzo KASAHARA, Yuichi SHIRASAKI, Katsuyoshi KAWAGUCHI, Ryoichi IWASE and Tadashi NAKATSUKA | A New Era of Ocean-floor Observations: Real-time Multi-disciplinary Observations at the Ocean Floor Using Submarine Cables |
920-933
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| Hiroshi MURAKAMI | Current State and Future Prospects of Digital Geographic Information |
934-943
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| Makoto MURAKAMI, Mikio TOBITA, Hiroshi YARAI, Shinzaburo OZAWA, Takuya NISHIMURA, Hiroyuki NAKAGAWA and Satoshi FUJIWARA | Application of Crustal Deformation Monitoring Using Synthetic Aperture Radar (SAR) for Seismological and Volcanological Studies |
944-956
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| ZhongCyao SHI | A Study on Automatic GIS Database Construction and Revision |
957-963
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| Isao NAITO | GPS Meteorology―Applications of GPS Retrieved Atmospheric Data to Meteorology and Geodesy― |
964-970
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| Makoto MURAKAMI, Shinzaburo OZAWA, Takuya NISHIMURA, Shinichi MIYAZAKI, Takeshi SAGIYA and Takashi TADA | Applications of GPS Permanent Array Measurements for Seismological and Volcanological Studies |
971-982
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| Tasuku TANAKA | Advancement of Satellite Remote Senshing |
983-992
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| Masahiro ICHIKI, Riko MODEKI, Yasuyuki NAKAMURA and Mikiko SHIBAO | An Introduction of the Comprehensive Earth Science Data Base, GeoRef |
993-1005
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Proceedings
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1006-1007
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Announcement
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1008-1010
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Pictorials
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1
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Three-dimensional Structures of Chondrules
by X-ray CT Method (Akira TSUCHIYAMA)
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2
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Laser Microprobe 40Ar/39Ar Age Dating (Hironobu HYODO, Tetsumaru ITAYA and Takaaki MATSUDA) | |||||
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3
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Large Volume High Pressure and High Temperature Apparatus Used for Synchrotron X-ray In-situ Observation (Takumi KATO, Hidenori TERASAKI and Tomoaki KUBO) | |||||
| 4 | High Mass-Resolution Type Secondary Ion Mass Spectrometer (Cameca ims-1270) at Tokyo Institute of Technology (Motoo ITO and Hisayoshi YURIMOTO) | |||||
| 5 | Three-dimensional Acoustic-image Animations Around the Focus Sea Area of the Hokkaido Nansei-oki Earthquake in 1993 Using the SeaBeam 2000 Swath Bathymetry and the IZANAGI Side-scanning Sonar Data (Akira ASADA) | |||||
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6 |
Multi-diciplinary Real-time Observations Using Decommissioned Submarine Cables (Junzo KASAHARA, Yuichi SHIRASAKI, Katsuyoshi KAWAGUCHI, Ryoichi IWASE and Tadashi NAKATSUKA) | |||||
| 7 | Application of Crustal Deformation Monitoring Using Synthetic Aperture Radar (SAR) for Seismological and Volcanological Studies (Makoto MURAKAMI, Mikio TOBITA, Hiroshi YARAI, Shinzaburo OZAWA, Takuya NISHIMURA, Hiroyuki NAKAGAWA and Satoshi FUJIWARA) | |||||
| 8-1 | A Behavior of Precipitable Water Vapor Retrieved by the Nationwide GPS Array (GEONET) of Geographical Survey Institute of Japan (Isao NAITO) | |||||
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8-2
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An Improvememt of GPS Positioning in GEONET by the Analysis Including Tropospheric Gradient Model(Isao NAITO) | |||||