Glaciological Research Project in Patagonia 2006-2009: Studies at Glaciar Perito Moreno, Hielo Patagonico Sur, in area of Hielo Patagonico Norte, and along the Pacific Coast

被引：7

作者：

Aniya, Masamu ^{[1
]}

Skvarca, Pedro ^{[2
]}

Sugiyama, Shin ^{[3
]}

Aoki, Tatsuto ^{[4
]}

Matsumoto, Takane ^{[5
]}

Anma, Ryo ^{[6
]}

Naito, Nozomu ^{[7
]}

Enomoto, Hiroyuki ^{[8
]}

Hori, Kazuaki ^{[9
]}

Marinsek, Sebastian ^{[2
]}

Konya, Keiko ^{[10
]}

Nuimura, Takayuki ^{[11
]}

Tsutaki, Shun ^{[12
]}

Tone, Kenta ^{[12
]}

Barcaza, Gonzalo ^{[13
]}

机构：

[1] Univ Tsukuba, Ibaraki 3058572, Japan

[2] Inst Antartico Argentina, Buenos Aires, DF, Argentina

[3] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan

[4] Kanazawa Univ, Coll Nat Sci, Kanazawa, Ishikawa 9201192, Japan

[5] Ctr Invest Ecosistemas Patagonia, Coyhaique, Chile

[6] Univ Tsukuba, Grad Sch Life & Environm Sci, Ibaraki 3058572, Japan

[7] Hiroshima Inst Technol, Dept Global Environm Studies, Hiroshima 7315193, Japan

[8] Kitami Inst Technol, Dept Civil Engn, Kitami, Hokkaido 0908507, Japan

[9] Mcijo Univ, Dept Environm Sci & Technol, Nagoya, Aichi 4688502, Japan

[10] Japan Agcy Marine Earth Sci & Technol, Res Inst Global Change, Yokosuka, Kanagawa 2370061, Japan

[11] Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan

[12] Hokkaido Univ, Grad Sch Earth Environm Sci, Sapporo, Hokkaido 0600810, Japan

[13] Minist Obras Publ, Direcc Aguas, Santiago, Chile

来源：

BULLETIN OF GLACIOLOGICAL RESEARCH | 2011年 / 29卷

关键词：

Patagonia Icefield; Glaciar Perito Moreno; glacier variation; Glaciar Exploradores; Mirai08-06; cruise;

D O I：

10.5331/bgr.29.1

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The Glaciological Research Project in Patagonia (GRPP) 2006-2009 was carried out with several objectives at Glaciar Perito Moreno of the Hielo Patagonico Sur (HPS), in the area of the Ihelo Patagcanico Norte (HPN) and along the Pacific coast. At Glaciar Perito Moreno, hot water drilling was carried out at about 5 km upstream from the terminus, reaching the glacier bottom at ca. 515m, in order to monitor subglacial water pressure. Good positive correlations among air temperature, subglacial water pressure and glacier flow speed were found. Based on C-14 dating of tree and organic samples, it is proposed that Glaciar Perito Moreno made two Little Ice Age (LIA) advances at AD1600-1700 and ca. 130-100 y BP (AD1820-50). Fan deltas located at the mouth of big rivers around Lago General Carrera (Buenos Aires) and Logo Cochrane (Pueyrreclon), in the area east of the HPN, were investigated to elucidate their development. The variations of 21 outlet glaciers of the HPN elucidated from aerial surveys for 2004; 05-2008/09 revealed an areal loss of 8.67 km(2) in four years, A general slowing down of retreats was observed with a few exceptions. Meteorological measurements at Glaciar Exploradores of the HPN from 2005 to 2009 indicate that air temperature ranged from 17.4 degrees C to -10.5 degrees C. The total annual precipitation was about 3000 mm. Glacier surface melt was observed at two spots. Sediment and water discharges from the glacier showed that while ss ater discharge fluctuated a lot, suspended sediment concentration was rather stable in summer. A single channel seismic profiling during the JAMSTEC MR08-06 cruise identified a probable submerged moraine formed before the last glacial maximum (LGM) in the Golfo de Penas, south of Taitao Peninsula. Piston coring along the Chilean coast further indicates that ice-rafted debris recorded the LGA1 and earlier Late Pleistocene events of the glacial advance.

引用

页码：1 / 17

页数：17

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