Universität zu Köln

Lamair, L., Hubert-Ferrari, A., Yamamoto, S., Fujiwara, O., Yokoyama, Y., Garrett, E., De Batist, M., Heyvaert, V. M. A., Boes, Evelien, Nakamura, Atsunori, Obrochta, Stephen ORCID: 0000-0001-9632-0372, Shishikura, Masanobu, Miyairi, Yosuke, Bruckner, Helmut, Ono, Eisuke, Riedesel, Svenja, De Rycker, Koen, Sato, Yoshiki and Walstra, Jan ORCID: 0000-0001-9721-124X (2019). Use of high-resolution seismic reflection data for paleogeographical reconstruction of shallow Lake Yamanaka (Fuji Five Lakes, Japan). Paleogeogr. Paleoclimatol. Paleoecol., 514. S. 233 - 251. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-616X

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Abstract

High-resolution seismic profiles, combined with the integration of published drilling data, provide a detailed paleoenvironmental history of Lake Yamanaka (Fuji Five Lakes, Japan). This study presents a detailed analysis of the different depositional stages of the area currently occupied by Lake Yamanaka (floodplain wetland, river and lake). From ca. 5500 cal yr BP to ca. 5050 cal yr BP, the Yamanaka basin was occupied by floodplain wetlands. During that period, the landscape was very stable and erosion on northeastern flank of Mt. Fuji was relatively limited. From ca. 5050 cal yr BP to ca. 3050 cal yr BP, the water level increased and the floodplain wetlands became a lake. From ca. 3050 cal yr BP to ca. 2050 cal yr BP, the water level progressively decreased, leading to a reduction in lake extent. During this lowering of the lake's water level, a 1 km(2) mass-transport deposit modified the physiography of the lake floor. From ca. 2050 cal yr BP to ca. 1050 cal yr BP, the lake disappeared and a river flowing towards the northwest occupied the depression. Ponds occupied morphological lows formed by mass transport deposits. From ca. 1050 cal yr BP to the present day, the lake water level rose again, connecting the ponds with the main lake. Since then, the lake water level has continued to rise to the current level. Lake water level fluctuations are the results of several factors that could be interconnected: (i) changes in precipitation rates; (ii) margin destabilization (the Yamanaka mass-transport deposit), (iii) changes in river inlets and therefore variation in water supplies, (iv) volcanic eruptions (scoria fall-out and lava flows) and (v) changes in vegetation cover. This study highlights the importance of coupling sediment cores and high-resolution seismic reflection profiling to identify lateral variation and modification of sedimentary inputs through time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Lamair, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hubert-Ferrari, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yamamoto, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fujiwara, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Yokoyama, Y. UNSPECIFIED UNSPECIFIED UNSPECIFIED Garrett, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED De Batist, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heyvaert, V. M. A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Boes, Evelien UNSPECIFIED UNSPECIFIED UNSPECIFIED Nakamura, Atsunori UNSPECIFIED UNSPECIFIED UNSPECIFIED Obrochta, Stephen UNSPECIFIED orcid.org/0000-0001-9632-0372 UNSPECIFIED Shishikura, Masanobu UNSPECIFIED UNSPECIFIED UNSPECIFIED Miyairi, Yosuke UNSPECIFIED UNSPECIFIED UNSPECIFIED Bruckner, Helmut UNSPECIFIED UNSPECIFIED UNSPECIFIED Ono, Eisuke UNSPECIFIED UNSPECIFIED UNSPECIFIED Riedesel, Svenja UNSPECIFIED UNSPECIFIED UNSPECIFIED De Rycker, Koen UNSPECIFIED UNSPECIFIED UNSPECIFIED Sato, Yoshiki UNSPECIFIED UNSPECIFIED UNSPECIFIED Walstra, Jan UNSPECIFIED orcid.org/0000-0001-9721-124X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-159162
DOI:	10.1016/j.palaeo.2018.09.028
Journal or Publication Title:	Paleogeogr. Paleoclimatol. Paleoecol.
Volume:	514
Page Range:	S. 233 - 251
Date:	2019
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	1872-616X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SEDIMENTS; CLINOFORM Multiple languages Geography, Physical; Geosciences, Multidisciplinary; Paleontology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/15916