Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta
Precipitation is an important component in the climate system and plays a key role in water resources protection, drought and flood prevention. Innovation Trend Analysis (ITA) method, R/S method, maximum entropy spectrum analysis and wavelet analysis were used to study the evolution characteristics...
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Technoscience Publications
2021-03-01
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Online Access: | https://neptjournal.com/upload-images/(18)D-1096.pdf |
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doaj-d44f08f91ecb4b93a9b87836072195682021-03-03T05:21:39ZengTechnoscience PublicationsNature Environment and Pollution Technology0972-62682395-34542021-03-0120117718410.46488/NEPT.2021.v20i01.018Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River DeltaXianqi Zhang, Yang Yang and Zhiwen ZhengPrecipitation is an important component in the climate system and plays a key role in water resources protection, drought and flood prevention. Innovation Trend Analysis (ITA) method, R/S method, maximum entropy spectrum analysis and wavelet analysis were used to study the evolution characteristics of the Yellow River Delta annual precipitation from 1954 to 2014. The results suggest that the precipitation series changed significantly and showed an overall downward trend, and may show an upward trend in the future, which is relatively strong. There are three-time scales of annual precipitation variation: 20-32a, 8-18a, and 3-6a. The quasi-27 year was the main oscillation period of the average annual precipitation in the Yellow River Delta, the secondary major period was 13 years, and the small-scale oscillation period was 5 years. Precipitation changed suddenly in 1980 and 2003. In contrast, there was no significant mutation point in 2002-2014.https://neptjournal.com/upload-images/(18)D-1096.pdfprecipitation, mutation, ita, wavelet analysis |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xianqi Zhang, Yang Yang and Zhiwen Zheng |
spellingShingle |
Xianqi Zhang, Yang Yang and Zhiwen Zheng Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta Nature Environment and Pollution Technology precipitation, mutation, ita, wavelet analysis |
author_facet |
Xianqi Zhang, Yang Yang and Zhiwen Zheng |
author_sort |
Xianqi Zhang, Yang Yang and Zhiwen Zheng |
title |
Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta |
title_short |
Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta |
title_full |
Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta |
title_fullStr |
Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta |
title_full_unstemmed |
Analysis of Temporal Evolution Characteristics of Annual Precipitation in the Yellow River Delta |
title_sort |
analysis of temporal evolution characteristics of annual precipitation in the yellow river delta |
publisher |
Technoscience Publications |
series |
Nature Environment and Pollution Technology |
issn |
0972-6268 2395-3454 |
publishDate |
2021-03-01 |
description |
Precipitation is an important component in the climate system and plays a key role in water resources protection, drought and flood prevention. Innovation Trend Analysis (ITA) method, R/S method, maximum entropy spectrum analysis and wavelet analysis were used to study the evolution characteristics of the Yellow River Delta annual precipitation from 1954 to 2014. The results suggest that the precipitation series changed significantly and showed an overall downward trend, and may show an upward trend in the future, which is relatively strong. There are three-time scales of annual precipitation variation: 20-32a, 8-18a, and 3-6a. The quasi-27 year was the main oscillation period of the average annual precipitation in the Yellow River Delta, the secondary major period was 13 years, and the small-scale oscillation period was 5 years. Precipitation changed suddenly in 1980 and 2003. In contrast, there was no significant mutation point in 2002-2014. |
topic |
precipitation, mutation, ita, wavelet analysis |
url |
https://neptjournal.com/upload-images/(18)D-1096.pdf |
work_keys_str_mv |
AT xianqizhangyangyangandzhiwenzheng analysisoftemporalevolutioncharacteristicsofannualprecipitationintheyellowriverdelta |
_version_ |
1724233383919222784 |