Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin
Based on the long-sequence precipitation data of 22 rainfall stations,this paper selects eight extreme precipitation indexes to analyze the temporal evolution and spatial distribution of extreme precipitation in Wanquan River Basin by linear trend method,moving average,MK test and moving t-test.The...
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Editorial Office of Pearl River
2021-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.03.006 |
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| author | XIAO Jing ZHANG Lu LIN Youwen |
| author_facet | XIAO Jing ZHANG Lu LIN Youwen |
| author_sort | XIAO Jing |
| collection | DOAJ |
| description | Based on the long-sequence precipitation data of 22 rainfall stations,this paper selects eight extreme precipitation indexes to analyze the temporal evolution and spatial distribution of extreme precipitation in Wanquan River Basin by linear trend method,moving average,MK test and moving t-test.The results show that:①The spatial distribution of the annual mean values of the eight indexes in the north source (except Sihe station) and the middle and lower reaches of the Wanquan River Basin is similar,with relatively small fluctuation;while that in the south source shows great difference,with great fluctuation in the whole.②The extreme precipitation index increases slightly,indicating that the long-term variation trend is still uncertain.The long-term variation trend of the south source,north source and middle and lower reaches is differentiated.③Except for CWD,the seven indexes such as PRCPTOT in the basin have similar interdecadal rules,with obvious interdecadal changes and significant fluctuations after the 21st century.The interdecadal variation law of CWD is obvious,with large fluctuations.④The abrupt year of extreme precipitation index is different,for which the PRCPTOT is similar to Rx1day and R99PTOT,while other indexes are different. |
| format | Article |
| id | doaj-art-c6f92bb095ab45e3920c4df5a8dcfe72 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-c6f92bb095ab45e3920c4df5a8dcfe722025-01-15T02:29:58ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352021-01-014247649167Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River BasinXIAO JingZHANG LuLIN YouwenBased on the long-sequence precipitation data of 22 rainfall stations,this paper selects eight extreme precipitation indexes to analyze the temporal evolution and spatial distribution of extreme precipitation in Wanquan River Basin by linear trend method,moving average,MK test and moving t-test.The results show that:①The spatial distribution of the annual mean values of the eight indexes in the north source (except Sihe station) and the middle and lower reaches of the Wanquan River Basin is similar,with relatively small fluctuation;while that in the south source shows great difference,with great fluctuation in the whole.②The extreme precipitation index increases slightly,indicating that the long-term variation trend is still uncertain.The long-term variation trend of the south source,north source and middle and lower reaches is differentiated.③Except for CWD,the seven indexes such as PRCPTOT in the basin have similar interdecadal rules,with obvious interdecadal changes and significant fluctuations after the 21st century.The interdecadal variation law of CWD is obvious,with large fluctuations.④The abrupt year of extreme precipitation index is different,for which the PRCPTOT is similar to Rx1day and R99PTOT,while other indexes are different.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.03.006extreme precipitationmoving averageMK testWanquan River Basin |
| spellingShingle | XIAO Jing ZHANG Lu LIN Youwen Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin Renmin Zhujiang extreme precipitation moving average MK test Wanquan River Basin |
| title | Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin |
| title_full | Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin |
| title_fullStr | Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin |
| title_full_unstemmed | Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin |
| title_short | Analysis for Spatio-temporal Variation Characteristics of Extreme Precipitation in Wanquan River Basin |
| title_sort | analysis for spatio temporal variation characteristics of extreme precipitation in wanquan river basin |
| topic | extreme precipitation moving average MK test Wanquan River Basin |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2021.03.006 |
| work_keys_str_mv | AT xiaojing analysisforspatiotemporalvariationcharacteristicsofextremeprecipitationinwanquanriverbasin AT zhanglu analysisforspatiotemporalvariationcharacteristicsofextremeprecipitationinwanquanriverbasin AT linyouwen analysisforspatiotemporalvariationcharacteristicsofextremeprecipitationinwanquanriverbasin |