Precipitation and Rainwater pH Spatial Distribution in Bahia Blanca and Tandil, Argentina  

作　　者：Alicia M. Campo Paula A. Zapperi Natasha Picone 

机构地区：[1]Department of Geography and Tourism, National University of the South, Bahia Blanca 8000, Argentina [2]Geographical Research Center, National Scientific and Technical Research Council, National University of the Center of theBuenos Aires province, Tandil 7000, Argentina

出　　处：《Journal of Earth Science and Engineering》2013年第10期683-689,共7页地球科学与工程（英文版）

摘　　要：While the occurrence of rainfall is a regional scale phenomenon, cities influence on precipitation spatial distribution patterns and their characteristics. These influences had been studied for a very long time especially in the Northern Hemisphere. Tandil and Bahia Blanca are middle cities of Argentina located in the south of Buenos Aires province. Both present continental template climate. The aim of this research is to analyze the spatial distribution patterns of precipitation and the rainwater pH values for the period October 2010-September 2011 in Tandil and Bahia Blanca. Gauge rain nets were installed in both cities. In each event of precipitation, amount and pH values were collected. Isohyets plotting were included in the thematic cartography that was made using ArcGis 9.3~ software. Although natural rains are generally considered as being weakly acid, the rainwater pH measurements demonstrated that in both cities the rain is alkaline. Regarding to the spatial distribution of the precipitation amounts, the isohyets of the annual records showed that the highest values were registered in areas of higher elevation while the lowest values were presented in both cities downtown, where the high buildings are concentrated.

关 键 词：PRECIPITATION PH Bahia Blanca Tandil. 

分 类 号：P426.613[天文地球—大气科学及气象学] Q948.15[生物学—植物学]