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Journal of Geography (Chigaku Zasshi), 2025 Vol.134 No.2

2025 Vol.134 No.2

Fieldwork at Nashornet, Central Dronning Maud Land, East Antarctica

At the upper reaches of the Jutulstraumen Glacier in central Dronning Maud Land, East Antarctica, nunataks—exposed rock formations—are widely distributed. This image captures the summit of one such nunatak, named Nashornet. The exposed rock to the left consists of a mafic sill intruding into Proterozoic sedimentary sequences. Based on the surface exposure dating of bedrock and erratics on this nunatak, it is possible to reconstruct past changes in the elevation of the East Antarctic Ice Sheet. The author participated in the 57th Japanese Antarctic Research Expedition (2015—2016) and conducted extensive fieldwork based out of Norway’s Troll Station. To reach the site, a helicopter was chartered from South Africa’s SANAE Station. This image was taken while heading to the helicopter pickup point after completing glacial geomorphological surveys and collecting samples for surface exposure dating.


(Photograph & Explanation: Yusuke SUGANUMA)



Special Issue: Physical Geography in Cold Regions (Part Ⅰ): Dynamics of the Natural Environment in Polar and Mountainous Regions

Overview of the Special Issue on
 “Physical Geography in Cold Regions (Part Ⅰ):
 Dynamics of the Natural Environment in Polar and Mountainous Regions”

Kuniyasu MOKUDAI and Yoshihiko KARIYA

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 105.

DOI:10.5026/jgeography.134.105

Introduction to the Special Issue on
 “Physical Geography in Cold Region (Part Ⅰ):
 Dynamics of the Natural Environment in Polar and Mountainous Regions”

Kuniyasu MOKUDAI and Yoshihiko KARIYA

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 107.

DOI:10.5026/jgeography.134.107

From Reconstructing the Antarctic Ice Sheet History
 to Understanding Large-scale Ice Mass Loss Mechanisms (Review Article)

Yusuke SUGANUMA and Takanobu SAWAGAKI

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 113.

DOI:10.5026/jgeography.134.113

Dynamics of Permafrost Geomorphology in the High Arctic Svalbard (Review Article)

Norikazu MATSUOKA, Tatsuya WATANABE
and Hanne H. CHRISTIANSEN

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 137.

DOI:10.5026/jgeography.134.137

Glacier Shrinkage and Environmental Impacts
 in the Tropical High Mountains of Africa (Review Article)

Yuya OTANI and Kazuharu MIZUNO

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 161.

DOI:10.5026/jgeography.134.161

Massive Rock Avalanche Deposits at the Glaciated Tanbosawa Basin,
 East Face of Mount Tateyama (Oyama), Northern Japanese Alps, Central Japan
 (Short Article)

Yoshihiko KARIYA, Yuki MATSUSHI,
Hiroyuki MATSUZAKI and Kotaro FUKUI

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 183.

DOI:10.5026/jgeography.134.183

Rock Slope Denudation Processes at Mt. Shakushi in the Hakuba Mountains
 (Short Article)

Hirotaka SUGIYAMA and Chiyuki NARAMA

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 195.

DOI:10.5026/jgeography.134.195

Internal Structure of Sannomado Glacier, Mt. Tsurugi, Northern Japanese Alps
 (Short Article)

Hajime IIDA and Kotaro FUKUI

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 207.

DOI:10.5026/jgeography.134.207

Characteristics of Snow-patch Collapse
 at the Hakuba Daisekkei Perennial Snow Patch (Short Article)

Chiyuki NARAMA, Ryoji YOSHIMURA and Hitomi HATA

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 217.

DOI:10.5026/jgeography.134.217

Afforestation Seed Storages at Algific Talus Slopes, Japan:
 Use of Local Cold Environments for Forestry (Letter)

Chousei SHIMIZU, Hidenobu KATSUKI and Yuki SAWADA

Journal of Geography (Chigaku Zasshi), 2025, 134(2), 231.

DOI:10.5026/jgeography.134.231

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