月平均火山活动特征指数时间序列研究与建立
曲维政
2005-01
项目
【英文摘要】Based on the records of the ice cores of the northern and southern hemispheres and the data of the chemical components of the volcano eruptive matters, obtained with modern observation means, the data of the content of the sulfites, like gas and sulfate, are supplemented, which the data of the volcano activities, published by the Smith Institute of USA, do not have. The total quantity of the sulfate in the eruptive matters of over class 3 volcano eruptions since 1948 is determined. The accuracy of records of this volcano activities is examined based on the records of the ice cores. These records include the number of the eruption times and their intensity. The transmission rules of the volcano dust veil and volcano aerosol with time in the vertical and horizontal directions, especially the transmission rules at different latitude bands and different hemispheres, are investigated. Based on the transmission rule total quantity of the volcano eruptive matters, the content of the sulfites, sulfate and volcano aerosol in 4-dimensions, the transmission extension of the volcano dust veil and volcano aerosol after the over class 3 volcano eruptions since 1948 is calculated. Based on the above-mentioned research results, 3 time sequences of character index of the volcano activities at middle and high latitudes in the northern hemisphere, low latitude in both northern and southern hemispheres and middle and high of the southern hemisphere, which correctly reflect the characters of the volcano activities and in the unit of continuous monthly averaged value, are constructed. This work provides valuable basic data for the research on the climate effect of volcano and, thus, promotes this research.
【中文摘要】根据南北半球冰芯记录和现代化观测手段所获得的火山喷发物质化学成分资料,补充美国斯密森研究所公布的世界火山活动资料中所没有的关于SO2气体和硫酸盐等硫化物含量资料,确定1948年以来历次3级以上火山喷发物质中硫化物总量;利用冰芯记录检查该火山活动记录的准确性,包括火山喷发个数和强度;研究火山尘幕和火山气溶胶在垂直方向上和水平方向上随时间的传播变化规律,特别是不同纬度带、不同半球之间的传播变化规律。根据火山喷发物质总量、硫酸盐等硫化物含量和火山气溶胶四维传播变化规律计算出1948年以来历次3级以上火山喷发后火山尘幕和火山气溶胶的传播范围。根据上述研究结果,构建北半球中高纬度、南北半球低纬度和南半球中高纬度三个正确反映火山活动特征的连续的以月平均值为单位的火山活动特征指数时间序列,为火山气候效应研究提供一份珍贵的基础性资料,将促进火山活动气候学效应研究向前迈进一步。