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アルタイ山脈および富士山の山岳永久凍土帯での斜面変動

阿尔泰山和富士山山地多年冻土带的坡度波动

基本信息

批准号：
03J01492
负责人：
福井幸太郎
金额：
$ 2.11万
依托单位：
National Institute of Polar Research
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

1.目的アルタイ山脈はモンゴル西部からシベリア南部にかけて2000km以上も延びている長大な山脈である.アルタイ山脈北西部に位置するロシア・アルタイ山脈では,過去30年間に旧ソビエト領内で温暖化が最も顕著に進行している.本研究はロシア・アルタイ山脈の永久凍土分布斜面で,温暖化によりどのような地形変化が生じているのか?明らかにすることを目的とする.本年度は8月10日〜30日の期間,国立アルタイ大学のミハイロフ教授らと共同でロシア・アルタイ山脈南チュイスキー山地中央部Akkol谷(標高2200〜3700m)にて現地調査を行った.観測項目は永久凍土が流動して出来る地形である岩石氷河の流動の測量,2003年に設置した気温及び地温観測用データロガーのデータの回収である.2.結果岩石氷河上には50ヶ所に測量基点が設置されており,全ての基点で最大傾斜方向に10-30cmの流動が認められた.昨年よりも流動速度が加速している基点が幾つかあった.谷壁斜面の4地点に設置した気温計のうち3地点で昨年同様,通年の気温データを回収出来た.年平均気温は-3〜-4℃であり,このことからAkkol谷が気温的には不連続永久凍土分布帯に位置することが再確認出来た.また,岩石氷河上14ヶ所に設置した地表面温度観測用データロガー,1ヶ所に設置した地中温度(深度0,0.5,1.0,1.5,2m)観測用データロガーも昨年同様全て正常に作動していた.年平均地表面温度は-3〜-5.5℃であり,データロガーを設置した岩石氷河内部に永久凍土が存在することは間違いないことが再確認出来た.3.研究成果2005年6月のヨーロッパ永久凍土学会(ポツダム),同年9月の国際地形学会(サラゴサ)で研究成果について温暖化と永久凍土の融解について発表を行った.現在,Polish Polar ResearchとGlobal and Planetary Changeに投稿中.

1. Purpose: to extend the mountain in the west and the 2000km in the south. The northern and western part of the mountain is located in the north and west of the mountain, and the climate change has been the most serious in the past 30 years in the field of the old railway. In this study, the slope of the permanent soil distribution in the mountain area, the topography of the mountain, the slope of the soil, the temperature of the earth, the temperature of the earth, the slope of the soil, the slope of the permanent soil distribution, the temperature and the temperature of the earth were studied. Let's see if we want to know what's going on. During the period from August 10th to August 30th this year, the professor of the National University of Pennsylvania jointly held a local tour of the Akkol Valley (with a height of 2200,3700m) in the central part of the mountainous area in the south of the mountain. In 2003, the equipment was set up to measure the temperature and ground temperature of the earth, which was used to measure the temperature and ground temperature of the earth. 2. The results show that the measuring base point is set at 50 ℃ on the rock river, and the maximum oblique direction of the full range base point is 10-30cm. Last year, the speed of the flow accelerated. The base point was very high. The location of Gubi slope 4 is the same as that of last year, and it is the same as that of last year. The annual average temperature is-3 ℃ and the temperature is 4 ℃. The temperature of the Akkol valley is not affected by the temperature of the permanent soil distribution. The temperature of the ground surface is set at 14 o'clock on the rock river, and the ground surface temperature is set at 1 o'clock (depth 0. 5 min. 0. 5 pm. 1. 5 pm 2 m). The temperature of the ground surface is set at the depth of 0. 5 min. 0. 5 pm. 1. 5 pm.) the temperature of the ground is set at the depth of 0. 5. 0. 0. 0. 0. 0. 5 pm.). The annual average ground surface temperature is-3 ℃, 5.5 ℃, and the temperature is 5.5 ℃. The annual average ground surface temperature is-3. 5 ℃. 3. Research results in June 2005, the Institute of permanent soil (the Institute of permanent soil), and in September of the same year, the research results of the International Society of topography (International Society of topography), the melting of the permanent soil, the melting of the soil, the table of the same year. Now, Polish Polar Research "Global and Planetary Change" is contributing.