黑龍江冰情分析與預(yù)報(bào)研究
發(fā)布時(shí)間:2018-01-26 11:36
本文關(guān)鍵詞: 氣候變化 水文特征 冰情特征 多元線(xiàn)性回歸法 人工神經(jīng)網(wǎng)絡(luò)BP 出處:《水電能源科學(xué)》2016年10期 論文類(lèi)型:期刊論文
【摘要】:鑒于預(yù)報(bào)氣候變化條件下黑龍江地區(qū)的冰情演變趨勢(shì)對(duì)黑龍江地區(qū)的防凌減災(zāi)工作具有重要意義,通過(guò)趨勢(shì)圖法和M-K趨勢(shì)檢驗(yàn)法分析了1957~2012年近60年黑龍江地區(qū)漠河站和哈爾濱站的氣象要素和冰情要素的變化趨勢(shì),并利用多元線(xiàn)性回歸法和人工神經(jīng)網(wǎng)絡(luò)法對(duì)待測(cè)站點(diǎn)的冰情資料進(jìn)行了預(yù)報(bào)。結(jié)果表明,近年來(lái)漠河站和哈爾濱站均有封河日期延后、開(kāi)河日期提前的趨勢(shì),且在預(yù)測(cè)漠河站開(kāi)河封河日期、哈爾濱站的封河日期時(shí),多元回歸法優(yōu)于人工神經(jīng)網(wǎng)絡(luò)法,預(yù)測(cè)哈爾濱站的開(kāi)河日期時(shí),兩者效果相差不大。
[Abstract]:In view of the trend of ice situation evolution in Heilongjiang region under the condition of forecasting climate change, it is of great significance to prevent and reduce ice loss in Heilongjiang area. The variation trends of meteorological and ice elements of Mohe station and Harbin station in Heilongjiang province during the past 60 years from 1957 to 2012 were analyzed by using trend map method and M-K trend test method. The multivariate linear regression method and artificial neural network method are used to forecast the ice condition data of the stations. The results show that in recent years, both Mohe station and Harbin station have the tendency to delay the date of river closure and advance the date of opening river. The multiple regression method is superior to the artificial neural network method in predicting the date of Kaihe River closure in Mohe Station and that of Harbin Station, but the effect of predicting the date of Kaihe River in Harbin Station is not much different.
【作者單位】: 河海大學(xué)水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;上?睖y(cè)設(shè)計(jì)研究院;中國(guó)電建集團(tuán)成都勘測(cè)設(shè)計(jì)研究院有限公司;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(41371047) 中國(guó)科學(xué)院戰(zhàn)略性先導(dǎo)科技專(zhuān)項(xiàng)(XDA05110102) 水文水資源與水利工程科學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室專(zhuān)項(xiàng)經(jīng)費(fèi)項(xiàng)目(1069-514031112)
【分類(lèi)號(hào)】:P338;TV875
【正文快照】: 1引言黑龍江處于北緯41°以北的寒溫帶地區(qū),全年氣候寒冷,冬季長(zhǎng)達(dá)8個(gè)月,有冰期180多天,平均封凍期在150d以上,由于其特殊的河道形態(tài)、水流流量和水文氣象條件,常出現(xiàn)冰凌和冰壩現(xiàn)象,給人們的正常生活和生產(chǎn)帶來(lái)危害。尤其是近年來(lái),在全球氣候變暖的趨勢(shì)下,冬季封河日期和開(kāi)河
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 ;對(duì)進(jìn)一步開(kāi)展水情勘n,工作的意墜——全國(guó)冰情座談會(huì)專(zhuān)楲總}(cāng)P之一[J];水文月刊;1959年12期
2 ;對(duì)于進(jìn)一步開(kāi)展冰情,
本文編號(hào):1465501
本文鏈接:http://sikaile.net/kejilunwen/shuiwenshuili/1465501.html
最近更新
教材專(zhuān)著