SEGJ Technical Conference

SEGJ 118th (2008 Spring) Meeting

May 13 - 15, 2008

International Conference Hall, Waseda Univ.
(Nishi-Waseda Campus)

Waseda 1-20-14, Shinjyuku Ward, Tokyo
Phone: 03-5286-1755 (office of the conference hall)
Phone: 090-7214-7500 (SEGJ mobile phone)

Pre-registration and Onsite registration are available.
Registration fee:

	Pre-registration (Until April 30, 2008)*	Onsite registration**
Member / Non-member	4,000 Yen	5,000 Yen
Student	2,000 Yen	3,000 Yen

*Pre-registrant will receive BOTH CD-ROM and BOOK Proceedings at the reception of the conference.
Send an e-mail to the SEGJ office if you want to make a pre-registration.
**Onsite registrant will receive ONLY CD-ROM Proceedings. BOOK Proceedings can be purchased at a price of 1,000 Yen.

Banquet fee (Evening on May 14, 2008):

	Pre-registration (Until April 30, 2008)*	Onsite registration
Member / Non-member	4,000 Yen	5,000 Yen
Student	2,000 Yen	3,000 Yen

*Send an e-mail to the SEGJ office if you want to make a pre-registration for the banquet.

The Best Oral and Poster Presentation Awards

Guide for Technical Session

Program

May 13 (Tue)
______Oral session______________Room No.1 (3F)______________10:00-17:00
______Oral session______________Room No.2 (3F)______________10:00-17:00
______Poster session(Core time)_Room No.3 (3F)______________17:00-18:30

May 14 (Wed)
______Oral session______________Room No.1 (3F)______________10:00-12:00
______Oral session______________Room No.2 (3F)______________10:00-12:00
______Annual General Meeting____Ibuka Memorial Hall (1F)____13:20-15:00
______Invited session___________Ibuka Memorial Hall (1F)____15:20-17:20
______Banquet___________________Okuma Garden House__________18:00-20:00

May 15 (Thu)
______Oral session______________Room No.1 (3F)______________10:00-15:00
______Oral session______________Room No.2 (3F)______________10:00-14:40

Exhibition
______May 13____________________Room No.3(2) (3F)___________10:00-18:30
______May 14____________________Room No.3(2) (3F)___________10:00-17:00
______May 15____________________Room No.3(2) (3F)___________10:00-13:00

Companies: CTC, OYO, OYO SI, SUNCOH, Geo5, TERRA, HAKUSAN, RaaX

2008.04.07 Initial release

2008.04.15 Companied added for exhibition and presentation57 canceled
2008.05.07 Presentation7 canceled

May 13, Room No.1

Session	[Elastic Property]
Chair	Masato Yamamoto(OYO)

May 13, 10:00-10:20	1) Effect of confining pressure on P-wave velocity in imperfectly saturated sands - Computed P-wave velocities in sands by the use of heterogeneous saturation model- [Abstract] *Tsuyoshi Kanema, Yoshimasa Kobayashi(Chishitsu Keisoku Co., LTD.)
May 13, 10:20-10:40	2) Extension of the Gassmann-Biot Theory of Porous Media ,Pat3- The Gassmannp-Biot Theory of Porous Media ,Pat3,-Fluid Stress Field Eqation Caused by the Compressive Fluid Flow - [Abstract] *Shozaburo Nagumo
May 13, 10:40-11:00	3) Study on rock physical interpretation of near-surface geophysical data -Collection of physical properties of rocks and preliminary rock physics model study- [Abstract] *Toru Takahashi, Soichi Tanaka(Fukada Geological Institute)
May 13, 11:00-11:20	4) An interpretation method to obtain elastic properties using a bimodal model [Abstract] *Chisato Konishi, Hiroyuki Azuma(OYO Corporation)
May 13, 11:20-11:40	5) Investigating of CO2 saturation from P wave velocity. [Abstract] *Keigo Kitamura(RITE),Hiroyuki Azuma(OYO),Ziqiu Xue(KyotoUniv.)
May 13, 11:40-12:00	6) Experimental Study of elastic wave attenuation in partially frozen brine --part 4 estimation of scattering attenuation [Abstract] *Jun Matsushima, Makoto Suzuki, Yoshibumi Kato, Kunimitsu Ohashi, Shuichi Rokugawa(The University of Tokyo)

Session	[Seismic Exploration]
Chair	Jun Matsushima(Univ. of Tokyo)

May 13, 13:20-13:40	8) Imaging of well-seismic data with virtual source [Abstract] *Makoto Okada(Mitsubishi Corporation Exploration Co., Ltd)
May 13, 13:40-14:00	9) Development of data logger with use of high precision digital MEMS accelerometer [Abstract] *Toru Kuroda, Fumitoshi Murakami, Yoshiaki Kawabe, Yoshitaka Watanabe(JGI, Inc.)
May 13, 14:00-14:20	10) Examination of a next generation type Seismic Recording System [Abstract] *Takao Aizawa(Suncoh Consultants Co.,Ltd.),Tashifumi Matsuoka(KYOTO Univ.),Takashi Kunimi(Akebono Brake Industry Co.,Ltd.)
May 13, 14:20-14:40	11) Point-receiver enabled high-quality land seismic technology [Abstract] *Osamu Osawa(Schlumberger),Denis Sweeney(WesternGeco)
May 13, 14:40-15:00	12) Study of structural exploration across the Oki-Daito Ridge [Abstract] *Satoru Tanaka, Hitoshi Mikada(Kyoto Univ.),Azusa Nishizawa(Japan Coast Guard)

Session	[Civil Engineering]
Chair	Toru Kuroda(JGI)

May 13, 15:20-15:40	13) Application of integrated geophysical techniques to vulnerability assessment of levee, Part7, Consideration to standard format of investigation results for effective circulation [Abstract] *Koichi Hayashi(OYO Corporation),Tomio Inazaki(PWRI Tsukuba Central Institute),Segj Segj levee consortium
May 13, 15:40-16:00	14) A combined geophysical survey for detecting cavity behind a concrete revetment [Abstract] *Tomio Inazaki(PWRI Tsukuba Central Institute),Xinglin Lei(GSJ/AIST),Toshimichi Nakanishi(PWRI Tsukuba Central Institute)
May 13, 16:00-16:20	15) Evaluation of seismic signals while obtaining rock core samples in underground space and trials for measurement of subsurface structures [Abstract] *Nobukazu Soma, Yasuki Oikawa, Takashi Takehara(AIST),Hiroshi Asanuma(Tohoku Univ.)
May 13, 16:20-16:40	16) Reflection seismic survey by swath line method for geological foundation under buildings [Abstract] *Masayoshi Tanoue, Hirotaka Kawashima(DIA Consultant),Hideaki Yonekura(ENAA),Masanori Kozono(MLIT)
May 13, 16:40-17:00	17) Estimation of S-wave velocity around tunnel,using seismic reflection profiling data from undersea shield tunnel [Abstract] *Masato Yamamoto(OYO Corporation),Akira Takahashi(Tokyo Electric Power Company),Yoshihiro Emori(Tokyo Electric Power Company),Yoshitaka Niinomi(Tokyo Electric Power Services Co.Ltd),Yoshikazu Matsubara(OYO Corporation),Toshifumi Marsuoka(Kyoto University)

May 13, Room No.2

Session	[Gravity/Magnetics/Theory]
Chair	Tada-nori Goto(JAMSTEC)

May 13, 10:00-10:20	36) Three-dimensional inversion of MT data using simulated annealing [Abstract] *Eiji Nakayama,Elena yu. Fomenko(Moscow University),Toru Mogi(Hokkaido University)
May 13, 10:20-10:40	37) Sesimic acitivity and 3D density structure at the western region of Wakayama Prefecture - Characterization using the gravimetric tomography - [Abstract] *Eiji Nakayama
May 13, 10:40-11:00	38) Calibration shifts in Scintrex CG-3M gravimeters [Abstract] Motoo Ukawa(NIED),*Kyozo Nozaki(OYO),Hideki Ueda, Eisuke Fujita(NIED)
May 13, 11:00-11:20	39) A study on electromagnetic waves scattered by fine ceramic spheres [Abstract] *Eri Ohkawa, Hitoshi Mikada, Kyosuke Onishi(Guraduate School of Engineering, Kyoto University),Kiyoshi Tniguchi(Nittoc Construction),Shojiro Ishibashi(NCK Inc.),Yuzuru Ashida(NPO EEFA)
May 13, 11:20-11:40	40) Reduction to the pole based on magnetization of semi-infinite oblique columns [Abstract] *Choro Kitsunezaki
May 13, 11:40-12:00	41) An environmental gamma-ray survey at South Korea Busan [Abstract] *Akio Iwata(Human and Geoscience),Chanwoo Park(DONG-A Geological Engineering)

Session	[Ground Penetration Radar]
Chair	Koichi Suzuki(CRIEPI)

May 13, 13:00-13:20	42) Measurement of borehole surroundings by Linear Dipole Array in a Borehole [Abstract] *Hideharu Hanaoka(Osaka Electro-Communication Univ. Graduate School of Engineering),Satoshi Ebihara, Masahiro Note, Tsubasa Nakatsuka(Osaka Electro-Communication Univ.)
May 13, 13:20-13:40	43) Imaging method without influence of GPR survey direction using vector field analysis [Abstract] Yuichi Maejima, *Kyosuke Onishi, Hitoshi Mikada(Kyoto University),Naotoshi Konishi(Nippon Engineering Consultants),Yoshinori Sanada(JAMSTEC),Yuzuru Ashida(EEFA)
May 13, 13:40-14:00	44) Dual Sensor ALIS for humanitarian deminig and test operation in Croatia [Abstract] *Motoyuki Sato(Tohoku Univ.)
May 13, 14:00-14:20	45) Experimental approaches to understanding scattering behavior by Polarimetric GPR [Abstract] *Tseedulam Khuut, Sato Motoyuki(Tohoku University)
May 13, 14:20-14:40	46) GPR Target Signal Compression by Wiener Filtering [Abstract] *Gaballah Mahmoud, Sato Motoyuki(Tohoku University)
May 13, 14:40-15:00	47) Study on geophysical methods and instruments for investigation of river embankment Part3 -A field feasibility study using FM-CW GPR- [Abstract] *Keiichi Suzuki(Kawasaki Geol. Eng. Co., Ltd.),Tsuyoshi Yamamoto, Masataka Itokawa, Seiji Funabiki(Kinki Technical Office,MLIT),River embankment research consortium Kyoto university(Chairman Yuzuru Ashida)

Session	[Radioactive Waste Disposal]
Chair	Yoshihiro Sugimoto(Dia consultant)

May 13, 15:20-15:40	48) Application of acoustic tomography method to explore flow pass in hard rocks - Laboratory tests of granite blocks using high viscosity fluid - [Abstract] *Koichi Suzuki, Kenji Kubota(CRIEPI),Jun'ichi Sakakibara, Tomohide Yamada(JFE)
May 13, 15:40-16:00	49) Monitoring of high temperature zone by resistivity tomography during in-situ heater test in sedimentary soft rocks [Abstract] *Kenji Kubota, Koichi Suzuki(CRIEPI),Takafumi Ikenoya, Nozomu Takakura(Tokyu-cnst),Kazuo Tani(YNU)
May 13, 16:00-16:20	50) Software Development of Electromagnetic method for Site Investigation Part 8 - Distribution of Salinity Density in Ground Water [Abstract] Okazaki Koji, Yoshimura Kimitaka(RWMC),*Osawa Kenji, Osato Kazumi(GERD)
May 13, 16:20-16:40	51) A Study for hydraulic property estimation using elastic wave velocity dispersion - A case study in fractured rock - [Abstract] *Yoshimura Kimitaka(RWMC),Sakashita Susumu(RWMC(OYO at present)),Bruines Patrick, Ando Kenichi(OBAYASHI),Okumura Hirofumi(J-Power),Nishiyama Satoshi, Ohnishi Yuzo(Kyoto Univ.)
May 13, 16:40-17:00	52) Consideration on the evaluation of uncertainly for the MT 2-D image [Abstract] *Tateyuki Negi, Koji Umeda, Koichi Asamori(JAEA)

May 13, Room No.3

Session	[Poster]
Chair	Hidekazu Yamamoto(Iwate Univ.)

May 13, 17:00-18:30	P-1) Seismic interferometry using microtremor [Abstract] *Yoshiya Oda, Mami Fujimori, Takahiro Iwatate(TMU)
May 13, 17:00-18:30	P-2) Estimation of seismic intensity using two seismic stations [Abstract] *Yoshiya Oda, Shigeta Araki, Takahiro Iwatate(TMU)
May 13, 17:00-18:30	P-3) Extension of The Gassmann-Biot Porous Media, Par4 -Approximation of the Field Stress Equation - [Abstract] *Shozaburo Nagumo
May 13, 17:00-18:30	P-4) 3D GPR surveys for ground water assessment around a river levee - An example at Ara River, Saitama - [Abstract] *Toshiyuki Yokota(AIST),Tomio Inazaki, Shunsuke Shinagawa(PWRI),Takumi Ueda(AIST)
May 13, 17:00-18:30	P-5) Development of multi-transmission resistivity survey meter - Development and overview of Ver.2 instrument - [Abstract] *Motoharu Jinguuji(AIST),Yoshiaki Karino(Geotechnos Co.ltd)
May 13, 17:00-18:30	P-6) An overview of geophysical exploration project on the coastal area of Horonobe, Japan [Abstract] *Toshihiro Uchida, Yuji Mitsuhata, Takumi Ueda, Makoto Ando, Atsunao Marui, Kinichirou Kusunose(AIST)
May 13, 17:00-18:30	P-7) Instrument Development of Marine Electromagnetic Geophysical System -MEG- for Radioactive Waste Disposal No.5 - Noise Effect of Ocean Wave in Coastal Area [Abstract] Kimitaka Yoshimura, Koji Okazaki(RWMC),*Kazumi Osato, Satoshi Nakashima, Kenji Osawa(GERD)
May 13, 17:00-18:30	P-8) The test report of the searching instruments for the thing buried to the underground [Abstract] *Yuki Hama, Takeharu Takahashi(Nittetsu Mining Co.,LTD.),Eri Hosokawa, Yuuichi Yomori(Daiwa Exploration & Consulting),Nobuyoshi Iyatomi(Nittetsu Mining Co.,LTD.)
May 13, 17:00-18:30	P-9) Electrical resistivity survey in Bayon temple, Angkor [Abstract] *Yoshihiro Sugimoto, Naoyuki Yamada(DIA Consultants Co., Ltd.),Tomochika Tokunaga, Mohamed Metwaly, Katsuro Mogi(The Uneversity of Tokyo),Kyosuke Onishi(Kyoto University),Ichita Shimoda(Waseda University),Yoshinori Iwasaki(Geo-Research Institute)

May 14, Room No.1

Session	[Disaster Prevention1]
Chair	Koichi Hayashi(OYO)

May 14, 10:00-10:20	18) Modeling subsurface structure for ground-motion simulation in Sendai plain by receiver-function inversion [Abstract] *Takeshi Kurose, Shinichi Akiyama(CTC),Hiroyuki Fujiwara(NIED),Hiroaki Yamanaka(Tokyo Inst. of Tech.)
May 14, 10:20-10:40	19) Microtremor Exploration of S-wave velocity structure in Matsumoto basin [Abstract] *Tomomichi Uchiyama, Hiroaki Yamanaka(T.I..T)
May 14, 10:40-11:00	20) Subsurface structures from train induced elastic waves using seismic interferometry [Abstract] *Norimitsu Nakata, Toshifumi Matsuoka, Kyosuke Onishi, Takeshi Tsuji, Changhyun Lee(Kyoto Univ.),Kentaro Torii(Schlumberger),Takao Aizawa, Toshinori Kimura(Suncoh Consultants Co.,Ltd.)
May 14, 11:00-11:20	21) S-wave survey by seismic interferometry using traffic noise [Abstract] *Toshinori Kimura, Takao Aizawa, Shunichiro Ito(Suncoh Consultants Co.,Ltd.)
May 14, 11:20-11:40	22) On Numerical Experiment for the CCA Using Only Three Geophones Simultaneously [Abstract] *Toshiaki Yokoi(IISEE, BRI,Japan)
May 14, 11:40-12:00	23) On the effect of the 1st higher mode on the dispersion curve determined by array observation of microtremor and correlation based analysis -Toward a quantitative estimation- [Abstract] *Toshiaki Yokoi(IISEE, BRI, Japan)

May 14, Room No.2

Session	[Submarine Exploration]
Chair	Toshiaki Tanaka(Kyushu Univ.)

May 14, 10:00-10:20	53) Forward modeling of SIP data for mineral discrimination [Abstract] *Hideki Watanabe, Yutaka Sasaki, Hideki Mizunaga(Kyushu Univ.)
May 14, 10:20-10:40	54) 1D simulation of marine EM mthod for oil and methane hydrate exploration [Abstract] Syota Funada, *Yutaka Sasaki, Hideki Mizunaga(Kyushu Univ.)
May 14, 10:40-11:00	55) Marine deep-towed DC resistivity survey in a methane hydrate area, off Tokai, Japan [Abstract] *Tada-nori Goto, Takafumi Kasaya, Masataka Kinoshita(JAMSTEC)
May 14, 11:00-11:20	56) Elactromagnetic Pulse Wave Propagation in Underwater [Abstract] *Hiroshi Yoshida, Shojiro Ishibashi(JAMSTEC)
May 14, 11:40-12:00	58) Logging operations and results on the first Chikyu IODP drilling expeditions in Nankai Trough [Abstract] *Yoshinori Sanada, Moe kyaw Thu, Gregory Moore, Yukari Kido, Saneatsu Saito, Shin'ichi Kuramoto, Yoshihisa Kawamura, Masataka Kinoshita(JAMSTEC),Harold Tobin(The Univ. of Wisconsin-Madison),Nantroseize stage 1a Science party

May 15, Room No.1

Session	[Disaster Prevention2]
Chair	Susumu Abe(JGI)

May 15, 10:00-10:20	24) Why was siesmic intensity 6-upper at Iizuna in the Nagano prefecture during the 2007 Niigataken Chuetsu-oki Earthquake? Part 1. Outline of research and earthquake ground motion [Abstract] *Hiroaki Yamanaka(Tokyo Inst. Tech.),Takeshi Sugiyama, Shaokong Feng(Chuo Kaihatsu)
May 15, 10:20-10:40	25) Why was seismic intensity 6-upper at Iizuna in the Nagano prefecture during the 2007 Niigataken Chuetsu-oki Earthquake? Part 2. Geophysical exploration for S-wave velocity structure [Abstract] *Takeshi Sugiyama, Shaokong Feng(Chuo Kaihatsu Corp.),Yamanaka Hiroaki(Tokyo Institute of Technology)
May 15, 10:40-11:00	26) Site invetigation using surface-wave method and micro-tremor array measurements in disasterarea of The Niigataken Chuetsu-oki Earthquake in 2007 [Abstract] *Koichi Hayashi(OYO Corporation),Tsutomu Hirade(Building Research Institute),Satoru Ohtsuka, Koichi Isobe(Nagaoka University of Technology)
May 15, 11:00-11:20	27) Inversion of S-wave velocity structures in Morioka City by using phase velocities of Rayleigh waves and microtremor H/V - checking solutions by using phase velocities of Love wave - [Abstract] Yuki Gohkon(Iwate University),Hidekazu Yamamoto, Tsuyoshi Sano(Iwate University),*Shuhei Kumata(Iwate University)
May 15, 11:20-11:40	28) Estimation of basement structures in the northern part of Kitakami Lowland, Iwate Prefecture by using microtremor H/V spectra [Abstract] *Hidekazu Yamamoto, Mio Komatsu, Tsuyoshi Sano(Iwate University)
May 15, 11:40-12:00	29) Comparison of the phase velocities in Soka, Saitama estimated from array strong-motion and microtremor records [Abstract] *Kunikazu Yoshida, Haruko Sekiguchi(AFRC, AIST)

Session	[Disaster Prevention3]
Chair	Takeshi Sugiyama(Chuo Kaihatsu)

May 15, 13:00-13:20	30) Terrain effect on 2D surface wave method [Abstract] *Hiroomi Nakazato(NARO),Koichi Hayashi(OYO Corporation),Keisuke Inoue, Toshiyasu Unno(NARO)
May 15, 13:20-13:40	31) Development and application of Surfstar---a full package for surface wave survey [Abstract] *Shaokong Feng(Chuo Kaihatsu Corp.),Guoxin Zhang(IWHR,China),Laixin Shen(Beijing Institute of H.E.P.D.R.),Ailan Che(Shanghai Jiaotong University),Xianqi Luo(China Three Gorges University)
May 15, 13:40-14:00	32) Application of evaluating dynamic sesmic-capacity on middle scale buildings through microtremors analysis [Abstract] *Teruki Maiguma(Waseda University),Akimiti Hibi(Waseda University),Hiroyuki Takashima(Nihon Retrofit Co.)
May 15, 14:00-14:20	33) Integrated seismic imaging of active and passive data for the delineation of active faults and crustal structure in the Kitakami lowland, northeast Japan [Abstract] *Susumu Abe, Hideo Saito(JGI, Inc.),Hiroshi Sato(ERI, Univ. of Tokyo),Shin Koshiya(Iwate Univ.),Kazuya Shiraishi, Fumitoshi Murakami(JGI, Inc.),Naoko Kato(ERI, Univ. of Tokyo),Taku Kawanaka, Toru Kuroda(JGI, Inc.)
May 15, 14:20-14:40	34) Deep seismic reflection profiling across the Kitakami lowland, northeast Japan [Abstract] *Hideo Saito, Susumu Abe, Kazuya Shiraishi(JGI, Inc.),Hiroshi Sato(ERI, Univ. of Tokyo),Shin Koshiya(Iwate Univ.),Naoko Kato(ERI, Univ. of Tokyo),Taku Kawanaka(JGI, Inc.)
May 15, 14:40-15:00	35) Deep seismic profiling using P-S converted phases recorded by MEMS-based accelerometers - A case study in the Kitakami lowland, northeast Japan - [Abstract] Kazuya Shiraishi, *Susumu Abe, Hideo Saito(JGI, Inc.),Hiroshi Sato(ERI, Univ. of Tokyo),Shin Koshiya(Iwate Univ.),Taku Kawanaka(JGI, Inc.)

May 15, Room No.2

Session	[Electric/Electromagnetics1]
Chair	Makoto Inoue(Global Info-tec)

May 15, 10:00-10:20	59) Development of measurement system for Fluif Flow Electromagnetic method -Experimental production of portable triaxial megnetometer- [Abstract] *Hideki Mizunaga, Toshiaki Tanaka(Kyushu University)
May 15, 10:20-10:40	60) Development of measurement system for Fluid Flow Electromagnetic method - Development of dynamic active filter - [Abstract] *Toshiaki Tanaka, Hideki Mizunaga(Kyushu university)
May 15, 10:40-11:00	61) Temporal changes of properties in landfills based on the resistivity and the ionic concentrations in the leachate [Abstract] *Yosuke Kawamura, Masaki Sugisaki, Kazuo Kamura(Waseda University),Kenji Sato(Envir. Res. Center of Chiba)
May 15, 11:00-11:20	62) Continuous 2D resistivity monitoring on the blast testing for liquefaction [Abstract] *Motoharu Jinguuji(AIST),Takahiro Kannno, Hiroshi Nakazawa(PARI),Koichi Nagao(Sato Kogyo Co.ltd),Naoaki Suemasa(Musashi Institute of Technology)
May 15, 11:20-11:40	63) Estimation of geological features distribution of tunnel ground by compound analysis of electromagnetic methods [Abstract] *Kenji Okazaki, Yoshihiko Ito, Katsuhito Agui(CERI, PWRI),Hiroyuki Fujioka(HRDB, MLIT)
May 15, 11:40-12:00	64) The two potentials of arbitaries bodies [Abstract] *Sirou Oyama

Session	[Electric/Electromagnetics2]
Chair	Hideki Mizunaga(Kyushu Univ.)

May 15, 13:00-13:20	65) Application of DC-Resistivity Imaging Technique for Groundwater Investigation - A Case Study from Malaysia [Abstract] *Mejus Lakam, Yaccup Rahman, Rahman Mohd, Dominic Jeremy, Mostapa Roslanzairi(Nuclear Malaysi),Rajuli Asminah, Tawnie Ismail, Ahmad Hisam(JMG)
May 15, 13:20-13:40	66) Application of Electrical Resistivity Survey to Cavity Detection at the Limestone Area [Abstract] *Samgyu Park(KIGAM),Jung ho Kim(KIGAM)
May 15, 13:40-14:00	67) Study of structural exploration using JJY standard electromagnetic wave [Abstract] *Syoji Yamazaki, Kyosuke Onishi, Hitoshi Mikada(Kyoto University),Naotoshi Konishi(Nippon Engineering Consultants co.,ltd.)
May 15, 14:00-14:20	68) Charasteristics of small-loop EM [Abstract] *Aijirou Shigematsu(Kyusyu university),Yutaka Sasaki, Hideki Mizunaga(Kyusyu university)
May 15, 14:20-14:40	69) Development of precise measuring method to comprehend internal characteristics of levees using electrical log and measurement of core resistivity. [Abstract] *Makoto Inoue(Global Info-tec),Tomio Inazaki(PWR Tsukuba Center Institute)

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