冰川冻土
冰川凍土
빙천동토
JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY
2000年
1期
23-28
,共6页
青藏高原%古里雅冰芯%δ18O%ENSO
青藏高原%古裏雅冰芯%δ18O%ENSO
청장고원%고리아빙심%δ18O%ENSO
Tibetan Plateau%Guliya Ice Core%δ18O%ENSO
对1951-1992年青藏高原古里雅冰芯中δ18O与I(南方涛动指数),δ18O与赤道东太平洋 SST(海表面温度)的关系进行了分析.在EI Nino年.无论是隆冬还是盛夏,古里雅冰芯中δ18O均减 小.表现为明显的降温,平均降温幅度分别为1.2℃和0.45℃.在特强El Nino年,平均降温幅度分 别为2.03℃和1.46℃.在La Nina年.盛夏古里雅冰芯中δ18O增大.表现为明显的增温,平均升腽幅度为1.02℃,在特强La Nina年,平均升温幅度为1.6℃,但隆冬古里雅冰芯中δ18O变化不明 显.在非La Nina年.隆冬古里雅冰芯中δ18O与同期3月SOI和同期1月赤道东太平洋SST的线 性相关关系变得显著.
對1951-1992年青藏高原古裏雅冰芯中δ18O與I(南方濤動指數),δ18O與赤道東太平洋 SST(海錶麵溫度)的關繫進行瞭分析.在EI Nino年.無論是隆鼕還是盛夏,古裏雅冰芯中δ18O均減 小.錶現為明顯的降溫,平均降溫幅度分彆為1.2℃和0.45℃.在特彊El Nino年,平均降溫幅度分 彆為2.03℃和1.46℃.在La Nina年.盛夏古裏雅冰芯中δ18O增大.錶現為明顯的增溫,平均升膃幅度為1.02℃,在特彊La Nina年,平均升溫幅度為1.6℃,但隆鼕古裏雅冰芯中δ18O變化不明 顯.在非La Nina年.隆鼕古裏雅冰芯中δ18O與同期3月SOI和同期1月赤道東太平洋SST的線 性相關關繫變得顯著.
대1951-1992년청장고원고리아빙심중δ18O여I(남방도동지수),δ18O여적도동태평양 SST(해표면온도)적관계진행료분석.재EI Nino년.무론시륭동환시성하,고리아빙심중δ18O균감 소.표현위명현적강온,평균강온폭도분별위1.2℃화0.45℃.재특강El Nino년,평균강온폭도분 별위2.03℃화1.46℃.재La Nina년.성하고리아빙심중δ18O증대.표현위명현적증온,평균승올폭도위1.02℃,재특강La Nina년,평균승온폭도위1.6℃,단륭동고리아빙심중δ18O변화불명 현.재비La Nina년.륭동고리아빙심중δ18O여동기3월SOI화동기1월적도동태평양SST적선 성상관관계변득현저.
The relationships between the δ18O in the Guliya ice core on the Tibetan Plateau and the SOI, as well as between the δ18O and the SST in the eastern Equatorial Pacific are analyzed. In the El Nino years, no matter in midsummer or in midwinter, δ18O in the Guliya ice core decreased, showing a marked decrease of temperature. The mean extents of the decrease were 1.2℃ and 0.45℃ respectively, and were 2.03℃ and 1.46℃ respectively in the strongest El Nino years; In the La Nina years, δ18O in the Guliya ice core in mid- summer increased, showing a marked rise of tempera- ture. The mean extents of rising was 1.02 ℃, and was 1.6 ℃ in the strongest La Nina years. However, the va- riation of δ18O in midwinter was undefined; In non-La Nina years, the linear correlation between δ18O in midwinter and SOI in March of the corre- sponding period, as well as between ,δ18O and SST in January of the corresponding period became obvious.