Effects on the Hydrological Environment by the Ash Fall due to the Volcanic Eruption of Mt.Sakurajima.

樱岛火山喷发降灰对水文环境的影响。

• 批准号: 60580203
• 负责人: TSUKADA Kimihiko
• 金额: $ 1.09万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60580203/
• 关键词: Volcanic eruption; Ash fall; Hydrological environment; 酸性雨(雨水のpH値); 酸性雨(雨水のPH値)

The low PH value in the rain water (acid rain) is observed recently here and there not only worldwide but in our country. And it becomes now a serious probrem as an origin of the widespread environmental pollution.The purpose of this investigation was to clarify the actual condition of the acid rain in the field around Mt.Sakurajima, kagoshima prefecture.In order to attain the purpose, within a research period (1980.9-1981.3), the rain water samples from 4 observed stations were collected with the bulk sampling method for a rainfall. The PH values of the river waters, the lake waters and the spring waters were also measured by using PH meter (Model 51, Yokokawa-Hokushin K.K.) at the each sampling station. The number of the sampling stations were about 130 sts.The results of this research are summarized as follows;1. The average PH value was included between 4.0 and 5.0 for 4 stations, and especially on the station installed at Kagoshima Univ. it showed bellow 4.5.2. The result mentioned ahove shows that the PH values vary according to the wind direction when the volcanic eruption occured.3. The obvious influences to the hydrological environment were not ovserved from this research. And the annual change were not so clear in this period.4. It is necessary to be carried on this kind of research in future.

近年来，不仅在世界各地，而且在我国各地都观察到雨水（酸雨）的低PH值。现在，它已成为一个严重的问题，作为广泛的环境污染的来源。本次调查的目的是为了弄清鹿儿岛县樱岛山周边地区酸雨的实际情况。为了达到这个目的，在一个研究期间（1980.9-1981.3），采用一次降雨的批量抽样方法，收集了4个观测站的雨水样本。采用51型PH计（Yokokawa-Hokushin K.K.）测量了各采样点的河水、湖水和泉水的PH值。抽样站的数目约为130个。本文的研究结果总结如下：1。4个站点的平均PH值在4.0 ~ 5.0之间，特别是鹿儿岛大学站点的PH值在4.5.2以下。上述结果表明，火山喷发时PH值随风向的变化而变化。本研究未观察到对水文环境的明显影响。这一时期的年际变化并不明显。今后有必要进行这方面的研究。

项目成果

塚田 公彦: 日本地理学会 予稿集. 32. 58-59 (1987)

Kimihiko Tsukada：日本地理学会会议记录 32. 58-59 (1987)。

TSUKADA,Kimihiko: "PH values in the hydrological environment around Mt.Sakuraijima." Abstr. Assoc. Japanese Geographers (Nihon Chirigakkai Yokoshu).32. 58-59 (1987)

冢田公彦：“樱井岛周边水文环境的PH值。”