基于文献地名提取的地震卫星遥感研究热点区域分析

Analysis of Hotspots in Earthquake Satellite Remote Sensing Research Areas by Extracting Place Names from Past Literatures

[目的/意义]对相关文献空间信息进行挖掘,进行区域分布和研究热度的集成分析,有助于深入分析与地理环境密切相关区域的研究发展态势,找出潜在的研究相对缺乏的区域。[方法/过程]以知网(CNKI)为数据源,采用Jieba分词器提取了1161篇文献,并对文献中的地理位置信息进行了可视化;在此基础上绘制了地震卫星遥感的研究区域热度分布图,并与现有地震分布图相比较,得到了潜在的研究相对缺乏的区域。[结果/结论]Jieba分词器的标注模式在地震卫星遥感地理信息数据提取中具有较好的检出率,对地理位置信息的自动识别率达78%以上,可以满足相关信息的提取需要。青藏高原东部边界地区、郯庐断裂带、燕山地震带和浙江断裂带是研究热度最高的区域,但中国尼泊尔边境地区、西藏林芝地区、西藏青海交界地区、中俄边境地区以及台湾地区是研究欠缺地区,未来的地震研究应该进一步关注这些潜在研究区域。

[Purpose/significance]Mining for the spatial information in the literatures and analyzing the spatial distribution of the research areas and their popularities,whichare beneficial for understanding of the research developments in different regions,and make it easy to find the regions where studies are insufficient.[Method/process]The paper takes CNKI as a data source,uses Jieba tokenizer to extract 1161 documents,and visualizes the geographic information in the documents.On this basis,the paper draws the heat distribution map of the research area of seismic satellite remote sensing,compares with the existing seismic distribution map,and obtains areas where potential research is relatively lacking.[Result/conclusion]The tagging mode of Jieba word segmentation has a good detection rate in the extraction of seismic satellite remote sensing geographic information data,and has achieved a good detection rate with more than 78%of automatic recognition rate of geographic location information,which can meet the needs of relevant information extraction.The regions near the eastern border of Qinghai-Tibet Pleatau,Tanlu fault zone,Yanshan earthquake zone and faults in Zhejiang province are the most popular researched regions,while the regions near China-Nepal boundary,Linzhi area in Tibet Autonomous Region,Tibet-Qinghai boundary,China-Russia boundary,and Taiwan are lack of research.Future seismic research should pay more attention to these potential research areas.