TY - JOUR
AU - Lindsay Vare
AU - Guillaume Mass√\textcopyright
AU - Thomas Gregory
AU - Christopher Smart
AU - Simon Belt
AB - A sea ice record for Barrow Strait in the Canadian Arctic Archipelago (CAA) is presented for the interval 10.0\textendash0.4 cal. kyr BP. This Holocene record is based primarily on the occurrence of a sea ice biomarker chemical, IP<sub>25</sub>, isolated from a marine sediment core obtained from Barrow Strait in 2005. A core chronology is based on <sup>14</sup>C AMS dating of mollusc shells obtained from ten horizons within the core. The primary IP<sub>25</sub> data are compared with complementary proxy data obtained from analysis of other organic biomarkers, stable isotope composition of bulk organic matter, benthic foraminifera, particle size distributions and ratios of inorganic elements. The combined proxy data show that the palaeo-sea ice record can be grouped according to four intervals, and these can be contextualised further with respect to the Holocene Thermal Maximum (HTM). Spring sea ice occurrence was lowest during the early\textendashmid Holocene (10.0\textendash6.0 cal. kyr BP) and this was followed by a second phase (6.0\textendash4.0 cal. kyr BP) where spring sea ice occurrence showed a small increase. Between 4.0 and 3.0 cal. kyr BP, spring sea ice occurrence increased abruptly to above the median and we associate this interval with the termination of the HTM. Elevated spring sea ice occurrences continued from 3.0 to 0.4 cal. kyr BP, although they were more variable on shorter timescales. Within this fourth interval, we also provide evidence for slightly lower and subsequently higher spring sea ice occurrence during the Mediaeval Warm Period and the Little Ice Age respectively. Comparisons are made between our proxy data with those obtained from other palaeo-climate and sea ice studies for the CAA.
BT - Quaternary Science Reviews
M1 - 13-14
N1 - doi: 10.1016/j.quascirev.2009.01.013
N2 - A sea ice record for Barrow Strait in the Canadian Arctic Archipelago (CAA) is presented for the interval 10.0\textendash0.4 cal. kyr BP. This Holocene record is based primarily on the occurrence of a sea ice biomarker chemical, IP<sub>25</sub>, isolated from a marine sediment core obtained from Barrow Strait in 2005. A core chronology is based on <sup>14</sup>C AMS dating of mollusc shells obtained from ten horizons within the core. The primary IP<sub>25</sub> data are compared with complementary proxy data obtained from analysis of other organic biomarkers, stable isotope composition of bulk organic matter, benthic foraminifera, particle size distributions and ratios of inorganic elements. The combined proxy data show that the palaeo-sea ice record can be grouped according to four intervals, and these can be contextualised further with respect to the Holocene Thermal Maximum (HTM). Spring sea ice occurrence was lowest during the early\textendashmid Holocene (10.0\textendash6.0 cal. kyr BP) and this was followed by a second phase (6.0\textendash4.0 cal. kyr BP) where spring sea ice occurrence showed a small increase. Between 4.0 and 3.0 cal. kyr BP, spring sea ice occurrence increased abruptly to above the median and we associate this interval with the termination of the HTM. Elevated spring sea ice occurrences continued from 3.0 to 0.4 cal. kyr BP, although they were more variable on shorter timescales. Within this fourth interval, we also provide evidence for slightly lower and subsequently higher spring sea ice occurrence during the Mediaeval Warm Period and the Little Ice Age respectively. Comparisons are made between our proxy data with those obtained from other palaeo-climate and sea ice studies for the CAA.
PY - 2009
SN - 0277-3791
SP - 1354
EP - 1366
T2 - Quaternary Science Reviews
TI - Sea ice variations in the central Canadian Arctic Archipelago during the Holocene
UR - http://www.sciencedirect.com/science/article/pii/S0277379109000419
VL - 28
ER -