Photo by Dr. S. Matsuura

Yuki MATSUSHI

Ph.D.

Geomorphologist

 

Associate professor

Mountain Hazard Section, GeoDisaster Division,
Disaster Prevention Research Institute, Kyoto University.

Gokasho, Uji, Kyoto 611-0011, Japan.
E-mail: matsushi [at] slope.dpri.kyoto-u.ac.jp

Last update: 12 Oct. 2011


Profile

Education:

Mar. 2001

B.Sc. College of Natural Sciences, University of Tsukuba, Japan.

Mar. 2003

M.Sc. Geoenvironmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Japan.

Mar. 2006

Ph.D. Geoenvironmental Sciences, Graduate School of Life and Environmental Sciences, University of Tsukuba, Japan.

Thesis: Triggering mechanisms and rainfall thresholds of shallow landslides on soil-mantled hillslopes with permeable and impermeable bedrocks
[Link to PDF: 109 pp., 4.1 MB]

[Geomorphology Research Group, University of Tsukuba]

 

Professional experience:

Apr. 2006-
Mar. 2007

Postdoctoral researcher
UTTAC (University of Tsukuba Tandem Accelerator Complex), Applied Accelerator Division, Research Facility Center for Science and Technology, University of Tsukuba, Japan.

[UTTAC AMS Group]

Apr. 2007-
Mar. 2010

JSPS (Japan Society for the Promotion of Science) research fellow
MALT (Micro Analysis Laboratory, Tandem Accelerator), Department of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, Japan.

[MALT], [JSPS]

Apr. 2010-
Jul. 2011

Postdoctoral researcher
Mountain Hazard Section, GeoDisaster Division, DPRI (Disaster Prevention Research Institute), Kyoto University, Japan.

 

Aug. 2011-
Present

Associate professor
Mountain Hazard Section, GeoDisaster Division, DPRI (Disaster Prevention Research Institute), Kyoto University, Japan.

[DPRI Mountain]

 

Research interests

Topics:

Quantifying hillslope denudation with in situ-produced cosmogenic 10Be and 26Al.

10Be, 26Al exposure, and 26Al/10Be burial dating.

Determination of limestone denudation rates with in-situ 36Cl.

Hydrological triggering-mechanisms of shallow landslides.

Sediment yields and channel initiation in watersheds.

 
 

Keywords:

Cosmogenic nuclides; exposure dating; denudation rate; landslide; slope hydrology; accelerator mass spectrometry (AMS); landscape evolution

 

 

Ongoing projects:

CONQUEST (Cosmogenic nuclide quantification of erosion systems in Japanese granitic mountains)

Karst Project (Determination of limestone denudation rates with in-situ 36Cl under subtropical to subarctic environments)

Mountain Dating (Reconstruction of watershed evolution in Kii Mountains and Shihmen in Taiwan)

 

 

Grants acquired:

As the principal investigator

2007-2009; Grant-in-Aid for JSPS Fellows (07J01748); 3300,000 JPY.

2011-2013; Grant-in-Aid for Young Scientists (B) (23710208); 3600,000 JPY.
 

As a co-investigator

2011-2012; Grant of Japan Geographic Data Center; 660,000JPY (PI: R. Nishii, Univ. Tsukuba).

2011-2013; Grant-in-Aid for challenging Exploratory Research (23654172); 900,000 JPY/2700,000 JPY (PI: M. Chigira, Kyoto Univ.).

2011-2013; Grant-in-Aid for challenging Exploratory Research (23656586); 700,000 JPY/2700,000 JPY (PI: K. Sasa, Univ. Tsukuba).

2011-2016; JST-CREST; 7650,000 JPY/200,000,000 JPY (PI: K. Kosugi, Kyoto Univ.).

 

Lectures and commentary:

Cosmogenic seminar 2006

Handout: Theory, techniques and applications of in situ-produced cosmogenic 10Be and 26Al

[Link to PDF (in Japanese)]

 

Lecture slides (in Japanese; MS-PowerPoint):

[1. Introduction]

[2. Cosmic ray irradiation and nuclide production]

[3. Visually-understanding the principles]

[4. Modeling 1 (Nuclide production scaling)]

[5. Modeling 2 (Nuclide accumulation in rock minerals)]

[6. Practical methodology]

[7. Applications and potentials]

 

Lab. Manuals

Chemistry for in-situ 10Be and 26Al measurement for terrestrial quartz by AMS at MALT

[Link to PDF (in Japanese)] Updated!

 

Chemistry for in-situ 36Cl in calcite by AMS with isotope dilution at UTTAC

[Link to PDF (in Japanese)]

 

Membership

Japanese Geomorphological Union

American Geophysical Union

Geological Society of America

Japan Society for Accelerator Mass Spectrometry Research

Geochemical Society of Japan

 

Journals for which Y. Matsushi has provided reviews:

Geomorphology (7), CATENA (1), Geology (1), Polar Science (1).

 

Publications

18.

Matsushi Y., Hattanji T., Akiyama S., Sasa K., Takahashi T., Sueki K., Matsukura Y., 2010. Evolution of solution dolines inferred from cosmogenic 36Cl in calcite. Geology 38, 1039-1042.
[doi:10.1130/G31302.1]

17.

Iizuka Y., Miura H., Iwasaki S., Maemoku H., Sawagaki T., Greve R., Satake H., Sasa K., Matsushi Y., 2010. Evidence of past migration of the ice divide between the Shirase and Sôya drainage basins derived from chemical characteristics of the marginal ice in the Soya drainage basin of East Antarctica. Journal of Glaciology 56, 395-404.
[doi:10.3189/002214310792447707]

16.

Sasa K., Takahashi T., Tosaki Y., Matsushi Y., Sueki K., Tamari M., Amano T., Oki T., Mihara S., Yamato Y., Nagashima Y., Bessho K., Kinoshita N., Matsumura H., 2010. Status and research programs of the multinuclide accelerator mass spectrometry system at the University of Tsukuba. Nuclear Instruments and Methods in Physics Research B 268, 871-875.
[
doi:10.1016/j.nimb.2009.10.052]

15.

Sasa K., Matsushi Y., Tosaki Y., Tamari M., Takahashi T., Nagashima Y., Horiuchi K., Matsuzaki H., Shibata Y., Hirabayashi M., Motoyama H., 2010. Measurement of cosmogenic 36Cl in the Dome Fuji ice core, Antarctica: Preliminary results for the Last Glacial Maximum and early Holocene. Nuclear Instruments and Methods in Physics Research B 268, 1193-1196.
[
doi:10.1016/j.nimb.2009.10.131]

14.

Matsushi Y., Matsuzaki H., 2010. Denudation rates and threshold slope in a granitic watershed, central Japan. Nuclear Instruments and Methods in Physics Research B 268, 1201-1204.
[
doi:10.1016/j.nimb.2009.10.133]

13.

Matsushi Y., Sasa K., Takahashi T., Sueki K., Nagashima Y., Matsukura Y., 2010. Denudation rates of carbonate pinnacles in Japanese karst areas: estimates from cosmogenic 36Cl in calcite. Nuclear Instruments and Methods in Physics Research B 268, 1205-1208.
[
doi:10.1016/j.nimb.2009.10.134]

12.

Tosaki, Y., Massmann G., Tase N., Sasa K., Takahashi T., Matsushi Y., Tamari M., Nagashima Y., Bessho K., Matsumura H., 2010. Distribution of 36Cl/Cl in a river-recharged aquifer: Implications for the fallout rate of bomb-produced 36Cl Nuclear Instruments and Methods in Physics Research B 268, 1261-1264.
[
doi:10.1016/j.nimb.2009.10.148]

11.

Kinoshita N., Matsumura H., Bessho K., Toyoda A., Masumoto K., Matsushi Y., Sasa K., Takahashi T., Mihara S., Oki T., Matsumura M., Tosaki Y., Sueki K., Tamari M., Nagashima Y., 2009. Depth Profile of Radioactivity Induced in the Thick Concrete Shield in EP1 Beam Line at the KEK 12-GeV Proton Synchrotron Facility. Nuclear Technology 168, 694-699.
[Link to ANS Publication]

10.

Wakatsuki T., Iida T., Matsushi Y., Kogure T., Sasaki Y., Matsukura Y., 2009. The Effect of Rock Weathering on Soil Formation and Form of Slope Failure on Two Mudrock Slopes : A Case Study on Slope Failures Caused by Typhoon 10, 2003 in Hidaka District, Hokkaido. Transactions, Japanese Geomorphological Union 30, 267-288. (in Japanese with English abstract).
[Link to CiNii PDF]

9.

Matsushi Y., Matsuzaki H., Matsukura Y., 2008. Potential of in situ-produced cosmogenic nuclides for quantifying strength reduction of bedrock in soil-mantled hillslopes. Quaternary Geochronology 3, 262-267.
[doi:10.1016/j.quageo.2007.11.003]

8.

Matsushi Y., Matsukura Y.,2007. Rainfall thresholds for shallow landsliding derived from pressure-head monitoring: cases with permeable and impermeable bedrocks in Boso Peninsula, Japan. Earth Surface Processes and Landforms 32, 1308-1322.
[doi:10.1002/esp.1491]

7.

Matsushi Y., Wakasa S., Matsuzaki H., Matsukura Y. ,2007. In situ-produced cosmogenic 10Be and 26Al analyses in process geomorphology. Transactions, Japanese Geomorphological Union 28, 87-107. (in Japanese with English abstract).
[Link to CiNii PDF]

6.

Matsushi Y., Wakasa S., Matsuzaki H., Matsukura Y.,2006. Long-term denudation rates of actively uplifting hillcrests in the Boso Peninsula, Japan, estimated from depth profiling of in situ-produced cosmogenic 10Be and 26Al. Geomorphology 82, 283-294.
[doi:10.1016/j.geomorph.2006.05.009]

5.

Matsushi Y., Matsukura Y.,2006. Cohesion of unsaturated residual soils as a function of volumetric water content. Bulletin of Engineering Geology and the Environment 65, 449-455.
[doi:10.1007/s10064-005-0035-9]

4.

Hattanji T., Matsushi Y.,2006. Effect of runoff processes on channel initiation: comparison of four forested mountains in Japan. Transactions, Japanese Geomorphological Union 27, 319-336.
[Link to CiNii PDF]

3.

Matsushi Y., Hattanji T., Matsukura Y.,2006. Mechanisms of shallow landslides on soil-mantled hillslopes with permeable and impermeable bedrocks in the Boso Peninsula, Japan. Geomorphology 76, 92-108.
[doi:10.1016/j.geomorph.2005.10.003]

2.

Matsushi Y., Matsukura Y.,2004. Mechanism and location of slope failures in hilly terrains with different bedrock permeability. Transactions, Japanese Geomorphological Union 25, 139-159 (in Japanese with English abstract).
[Link to CiNii PDF]

1.

Hattanji T., Wakasa S., Matsushi Y.,2003. The numerical relationship among first-order streams, peaks and saddles in two dissected mountains. Transactions, Japanese Geomorphological Union 24, 205-213.
[Link to CiNii PDF]


Copyright (C) 2011 Y. Matsushi. All Rights Reserved.

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