北冰洋中部阿尔法脊晚第四纪介形虫化石群与古海洋环境变迁
基于北冰洋中部阿尔法脊ARC3-B84A岩芯（水深2280 m）中的介形虫化石群记录，重建了MIS 13期以来该海域的古海洋环境变迁。从该岩芯获取的介形虫壳瓣逾7000枚，包含8属11种。由介形虫丰度所代表的底栖生物古生产力在MIS 13–10期很低，进入MIS 9期之后显著升高。海冰指示种Acetabulastoma arcticum显示常年海冰很可能是在MIS 9期之后出现的。在所有属种中，北冰洋中层水（AIW）指示种Polycope spp.和北冰洋深层水（AODW）指示种Cytheropteron sedovi的个体数量最多，二者在岩芯中的百分含量呈负相关，它们与其他属种(Microc...
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| Published in | Hăiyang dĭzhĭ yu dĭsĭjĭ dĭzhĭ Vol. 42; no. 4; pp. 39 - 49 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
Beijing
Marine Geology and Quaternary Geology
01.01.2022
上海自然博物馆(上海科技馆分馆) ,上海 200041%同济大学海洋地质国家重点实验室,上海 200092 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-1492 |
| DOI | 10.16562/j.cnki.0256-1492.2022021601 |
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| Abstract | 基于北冰洋中部阿尔法脊ARC3-B84A岩芯（水深2280 m）中的介形虫化石群记录，重建了MIS 13期以来该海域的古海洋环境变迁。从该岩芯获取的介形虫壳瓣逾7000枚，包含8属11种。由介形虫丰度所代表的底栖生物古生产力在MIS 13–10期很低，进入MIS 9期之后显著升高。海冰指示种Acetabulastoma arcticum显示常年海冰很可能是在MIS 9期之后出现的。在所有属种中，北冰洋中层水（AIW）指示种Polycope spp.和北冰洋深层水（AODW）指示种Cytheropteron sedovi的个体数量最多，二者在岩芯中的百分含量呈负相关，它们与其他属种(Microcythere medistriatum, Pseudocythere caudata, Pedicythere spp., Cytheropteron scoresbyi, Cytheropteron higashikawai, Henryhowella asperrima)一起，揭示该岩芯站位经历了如下的水团变迁历史：最初处于AODW上部（MIS 13–12），之后被上涌的AODW下部所取代（MIS 11–10）；尔后，上方的AIW大幅下潜，取代了AODW（MIS 9期–MIS 5早期）；在MIS 5中–晚期，AODW下部快速上涌，取代了AIW；最终在MIS 4之后，水团定格在AODW上部。 |
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| AbstractList | P736.2; 基于北冰洋中部阿尔法脊ARC3-B84A岩芯(水深2280 m)中的介形虫化石群记录,重建了MIS 13期以来该海域的古海洋环境变迁.从该岩芯获取的介形虫壳瓣逾7000枚,包含8属11种.由介形虫丰度所代表的底栖生物古生产力在M I S 13–10期很低,进入MIS 9期之后显著升高.海冰指示种Acetabulastoma arcticum显示常年海冰很可能是在MIS 9期之后出现的.在所有属种中,北冰洋中层水(AIW)指示种Polycope spp.和北冰洋深层水(AODW)指示种Cytheropteron sedovi的个体数量最多,二者在岩芯中的百分含量呈负相关,它们与其他属种(Microcythere medistriatum,Pseudocythere caudata,Pedicythere spp.,Cytheropteron scoresbyi,Cytheropteron higashikawai,Henryhowella asperrima)一起,揭示该岩芯站位经历了如下的水团变迁历史:最初处于AODW上部(MIS 13–12),之后被上涌的AODW下部所取代(MIS 11–10);尔后,上方的AIW大幅下潜,取代了AODW(MIS 9期–M I S 5早期);在MIS 5中–晚期,AODW下部快速上涌,取代了AIW;最终在MIS 4之后,水团定格在AODW上部. 基于北冰洋中部阿尔法脊ARC3-B84A岩芯（水深2280 m）中的介形虫化石群记录，重建了MIS 13期以来该海域的古海洋环境变迁。从该岩芯获取的介形虫壳瓣逾7000枚，包含8属11种。由介形虫丰度所代表的底栖生物古生产力在MIS 13–10期很低，进入MIS 9期之后显著升高。海冰指示种Acetabulastoma arcticum显示常年海冰很可能是在MIS 9期之后出现的。在所有属种中，北冰洋中层水（AIW）指示种Polycope spp.和北冰洋深层水（AODW）指示种Cytheropteron sedovi的个体数量最多，二者在岩芯中的百分含量呈负相关，它们与其他属种(Microcythere medistriatum, Pseudocythere caudata, Pedicythere spp., Cytheropteron scoresbyi, Cytheropteron higashikawai, Henryhowella asperrima)一起，揭示该岩芯站位经历了如下的水团变迁历史：最初处于AODW上部（MIS 13–12），之后被上涌的AODW下部所取代（MIS 11–10）；尔后，上方的AIW大幅下潜，取代了AODW（MIS 9期–MIS 5早期）；在MIS 5中–晚期，AODW下部快速上涌，取代了AIW；最终在MIS 4之后，水团定格在AODW上部。 |
| Author | WANG Yunan XIAO Wenshen ZHOU, Baochun WANG Rujian |
| AuthorAffiliation | 上海自然博物馆(上海科技馆分馆) ,上海 200041%同济大学海洋地质国家重点实验室,上海 200092 |
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| Author_FL | ZHOU Baochun WANG Yunan XIAO Wenshen WANG Rujian |
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| DOI | 10.16562/j.cnki.0256-1492.2022021601 |
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| Keywords | 晚第四纪 阿尔法脊 古海洋环境变迁 北冰洋中部 介形虫 |
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| Publisher | Marine Geology and Quaternary Geology 上海自然博物馆(上海科技馆分馆) ,上海 200041%同济大学海洋地质国家重点实验室,上海 200092 |
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| Snippet | 基于北冰洋中部阿尔法脊ARC3-B84A岩芯（水深2280 m）中的介形虫化石群记录，重建了MIS 13期以来该海域的古海洋环境变迁。从该岩芯获取的介形虫壳瓣逾7000枚，包含8属11种。... P736.2; 基于北冰洋中部阿尔法脊ARC3-B84A岩芯(水深2280 m)中的介形虫化石群记录,重建了MIS 13期以来该海域的古海洋环境变迁.从该岩芯获取的介形虫壳瓣逾7000枚,包含8属11... |
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| SubjectTerms | Aquatic reptiles Cytheropteron Deep water Earth science Geographical distribution Gravity Henryhowella asperrima Ice sheets Intermediate water Intermediate water masses Isotopes Microcythere Ocean circulation Oceanography Oceans Pedicythere Polar environments Polycope Pseudocythere caudata Sea ice Water depth |
| Title | 北冰洋中部阿尔法脊晚第四纪介形虫化石群与古海洋环境变迁 |
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