Latest Issue

Journal of Geography (Chigaku Zasshi), 2023 Vol.132 No.5

2023 Vol.132 No.5

Traces of Paleo-tsunamis Occurring during the Last 6500 years

View of tsunami deposit outcrop at Jyuosaki, Noda Village, Iwate Prefecture, Japan. Photo at the upper left is the cover photo of Part Ⅰ, taken by a drone from offshore (white circle in the photo indicates the location of the outcrop in the middle photo). The photo at the right is a close-up view of the trench indicated by the arrow in the middle photo, where several tsunami deposits can be identified; the sand layer below the To-a Formation (Towada a tephra, A.D. 915) is presumed to be the Jogan tsunami deposit (A.D. 869). Traces of paleo-tsunamis occurring during the last 6500 years can be observed in the whole outcrop, which is over 7 m in height.


(Photograph & Explanation: Noriyoshi TSUCHIYA and Kengo NAKAMURA)


Special Issue: Progress of Earth and Data Sciences Research into Tsunami Deposits,
and Contribution to Tsunami Disaster Prevention (Part Ⅱ):
Novel Analytical Techniques and Data Processing for Tsunami Deposits

Overview of the Special Issue “Progress of Earth and Data Sciences Research
 into Tsunami Deposits, and Contribution to Tsunami Disaster Prevention (Part Ⅱ):
 Novel Analytical Techniques and Data Processing for Tsunami Deposits”

Noriyoshi TSUCHIYA, Takeshi KOMAI and Kengo NAKAMURA

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 363.

DOI:10.5026/jgeography.132.363

Preface of the Special Issue “Progress of Earth and Data Sciences Research
 into Tsunami Deposits, and Contribution to Tsunami Disaster Prevention (Part Ⅱ):
 Novel Analytical Techniques and Data Processing for Tsunami Deposits”

Noriyoshi TSUCHIYA, Takeshi KOMAI and Kengo NAKAMURA

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 365.

DOI:10.5026/jgeography.132.365

Statistical Correlation for Geological Layers Using XRF Core Scan Data:
 Proof of Concept in Application to Tsunami Deposits (Original Article)

Tatsu KUWATANI, Toshimoto SAKAI,
Kengo NAKAMURA and Takeshi KOMAI

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 367.

DOI:10.5026/jgeography.132.367

Machine Learning-based Geochemical Discrimination Method for Tsunami Deposits
 and a Simple Determination System (Original Article)

Shuta SATO, Takeshi KOMAI,
Kengo NAKAMURA and Noriaki WATANABE

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 385.

DOI:10.5026/jgeography.132.385/p>

Estimating Layer Boundaries of Mixed-layer Tsunami Deposits
 with a XRF Core Scanner (Original Article)

Kengo NAKAMURA, Tatsu KUWATANI and Takeshi KOMAI

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 403.

DOI:10.5026/jgeography.132.403

Simple and Rapid Method for Geochemically Discriminating of Paleotsunami Deposits
 Using a Portable X-ray Fluorescence Spectrometry System:
 Application to Boring Cores from the Shizuoka Plain
 on the Pacific Coast of Central Japan (Original Article)

Takahiro WATANABE, Yusuke YAMAMOTO and Akihisa KITAMURA

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 417.

DOI:10.5026/jgeography.132.417

Original Article

Refraction Seismic Survey in Suruga Bay Using OBSs and Air-gun Sources:
 Increased Subsurface Velocity Structure Observed
 at the Northern Part of the Senoumi Bank

Nagisa NAKAO, Hisatoshi BABA, Kayoko TSURUGA,
Shintaro ABE and Takahito NISHIMIYA

Journal of Geography (Chigaku Zasshi), 2023, 132(5), 439.

DOI:10.5026/jgeography.132.439

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