東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Benthic foraminiferal assemblage ana...

Verbanaz, Ryan.

FindBook

Google Book

Amazon

博客來

Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula./
作者:	Verbanaz, Ryan.
面頁冊數:	91 p.
附註:	Source: Masters Abstracts International, Volume: 52-04.
Contained By:	Masters Abstracts International52-04(E).
標題:	Paleoclimate science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1549038
ISBN:	9781303600678

Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula.
Verbanaz, Ryan.

Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula. - 91 p.

Source: Masters Abstracts International, Volume: 52-04.

Thesis (M.S.)--Southern Illinois University at Carbondale, 2013.

This item must not be sold to any third party vendors.

This study used Jumbo Piston Core 126, collected from the Nathaniel B. Palmer during cruise NBP10-01, to investigate environmental variability in Barilari Bay, western Antarctic Peninsula as part of the LARsen Ice Shelf System, Antarctica (LARISSA) project. A total of 107 samples were collected every 20cm from a 21.42m sediment core. Benthic foraminiferal data from Jumbo Piston Core 126 was analyzed using Principal Component (PC), Canonical Correspondence Analysis (CCA), and cluster analyses to assist in the Holocene oceanographic and climatic interpretation of Barilari Bay. The first three principal components explain 79.5% of the variance in the foraminiferal abundance data. PC1 comprises 49.6% of the variance and represents the Bulimina aculeata assemblage. PC2 and PC3 explain 16.3% and 13.6% of the variance and characterize the Fursenkoina fusiformis and Pseudobolivina antarctica assemblages, respectively. F. fusiformis assemblage represents the presence of a less saline water mass associated with ice shelf decay. The agglutinated P. antarctica assemblage is indicative of Hyper Saline Shelf Water (HSSW). TheB. aculeata assemblage is associated with Upper Circumpolar Deep Water (UCDW) (Ishman and Domack, 1994) Sediments from ~1100-950 calibrated years Before Present (cal. yr BP) are characterized by theB. aculeata assemblage, indicating the presence of UCDW. At ~950 cal. yr BP the UCDW receded coincident with glacial conditions observed during what is interpreted as the Little Ice Age. The ~950-350 cal. yr BP interval represents glacial conditions interpreted from the high PC scores of the P. antarctica assemblage and low foraminiferal abundances due to HSSW and a high sedimentation rate from glacial runoff. Intermittent pulses of UCDW are observed in the 950-350 cal. yr BP interval, expressed by the PC peaks in the B. aculeata assemblage. Between ~300 and 100 cal. yr BP the middle of the fjord was dominated by the F. fusiformis assemblage, suggesting ice shelf decay and open marine conditions. At ~50 cal. yr BP UCDW progressed back into Barilari Bay and is currently the dominant water mass.

ISBN: 9781303600678Subjects--Topical Terms:

3173835
Paleoclimate science.

Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula.
LDR:03209nmm a2200313 4500 001 2059719
005 20150827082944.5
008 170521s2013 ||||||||||||||||| ||eng d
020 $a 9781303600678
035 $a (MiAaPQ)AAI1549038
035 $a AAI1549038
040 $a MiAaPQ $c MiAaPQ
100 1 $a Verbanaz, Ryan. $3 3173833
245 1 0 $a Benthic foraminiferal assemblage analysis as part of the larissa project for barilari bay, western Antarctic Peninsula.
300 $a 91 p.
500 $a Source: Masters Abstracts International, Volume: 52-04.
500 $a Adviser: Scott Ishman.
502 $a Thesis (M.S.)--Southern Illinois University at Carbondale, 2013.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a This study used Jumbo Piston Core 126, collected from the Nathaniel B. Palmer during cruise NBP10-01, to investigate environmental variability in Barilari Bay, western Antarctic Peninsula as part of the LARsen Ice Shelf System, Antarctica (LARISSA) project. A total of 107 samples were collected every 20cm from a 21.42m sediment core. Benthic foraminiferal data from Jumbo Piston Core 126 was analyzed using Principal Component (PC), Canonical Correspondence Analysis (CCA), and cluster analyses to assist in the Holocene oceanographic and climatic interpretation of Barilari Bay. The first three principal components explain 79.5% of the variance in the foraminiferal abundance data. PC1 comprises 49.6% of the variance and represents the Bulimina aculeata assemblage. PC2 and PC3 explain 16.3% and 13.6% of the variance and characterize the Fursenkoina fusiformis and Pseudobolivina antarctica assemblages, respectively. F. fusiformis assemblage represents the presence of a less saline water mass associated with ice shelf decay. The agglutinated P. antarctica assemblage is indicative of Hyper Saline Shelf Water (HSSW). TheB. aculeata assemblage is associated with Upper Circumpolar Deep Water (UCDW) (Ishman and Domack, 1994) Sediments from ~1100-950 calibrated years Before Present (cal. yr BP) are characterized by theB. aculeata assemblage, indicating the presence of UCDW. At ~950 cal. yr BP the UCDW receded coincident with glacial conditions observed during what is interpreted as the Little Ice Age. The ~950-350 cal. yr BP interval represents glacial conditions interpreted from the high PC scores of the P. antarctica assemblage and low foraminiferal abundances due to HSSW and a high sedimentation rate from glacial runoff. Intermittent pulses of UCDW are observed in the 950-350 cal. yr BP interval, expressed by the PC peaks in the B. aculeata assemblage. Between ~300 and 100 cal. yr BP the middle of the fjord was dominated by the F. fusiformis assemblage, suggesting ice shelf decay and open marine conditions. At ~50 cal. yr BP UCDW progressed back into Barilari Bay and is currently the dominant water mass.
590 $a School code: 0209.
650 4 $a Paleoclimate science. $3 3173835
650 4 $a Marine geology. $3 3173821
650 4 $a Paleoecology. $3 608789
690 $a 0653
690 $a 0556
690 $a 0426
710 2 $a Southern Illinois University at Carbondale. $b Geology. $3 3173834
773 0 $t Masters Abstracts International $g 52-04(E).
790 $a 0209
791 $a M.S.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1549038