Planktic Foraminifera-based sea-surface temperature record in the Tasman Sea and history of the Subtropical Front around New Zealand, over the last one million years

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doi: 10.1016/j.marmicro.2011.10.003
Author(s): Hayward, Bruce W.; Sabaa, Ashwaq T.; Kolodziej, Andrew; Crundwell, Martin P.; Steph, Silke; Scott, George H.; Neil, Helen L.; Bostock, Helen C.; Carter, Lionel; Grenfell, Hugh R.
Author Affiliation(s): Primary:
Geomarine Research, Auckland, New Zealand
Victoria University of Wellington, New Zealand
Institute of Geological and Nuclear Sciences, New Zealand
University of Bremen, Germany
National Institute of Water and Atmosphere, New Zealand
Volume Title: Marine Micropaleontology
Source: Marine Micropaleontology, Vol.82-83, p.13-27. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0377-8398 CODEN: MAMIDH
Note: In English. Includes 2 appendices. 69 refs.; illus., incl. 3 tables, sketch map
Summary: Planktic foraminiferal assemblages in a composite section from two cores (MD06-2989/2986) off the west coast of New Zealand's South Island (42-43.5°S) provide a 1 myr (MIS 31-1) sea-surface temperature (SST) record (∼3-4 kyr resolution) in the Tasman Sea. A significant overall faunal change occurred near the end of the mid-Pleistocene Climate Transition (MPT) at ∼600 ka (MIS 15). Mean annual SSTs were estimated using the Artificial Neural Network (ANN) method. Glacial-interglacial (G-I) cycles in the MPT had ∼9°C SST range, whereas in the post-MPT SST range was ∼6-7°C. The SST and faunal changes imply that the Subtropical Front (STF) migrated ∼6° in latitude to lie just north of the sites in MPT glacials (MIS 28-16), but only migrated 3-5° north in post-MPT glacials. These G-I latitudinal migrations of the STF west of New Zealand contrast with the situation east of New Zealand, where migrations of both the STF and Subantarctic Front were prevented by the Chatham Rise and Campbell Plateau. Subtropical Water is inferred to have only flowed around the south of New Zealand (as it does today) during MIS 11 and the Late Pleistocene-Holocene (MIS 5-1). Abstract Copyright (2012) Elsevier, B.V.
Year of Publication: 2012
Research Program: DSDP Deep Sea Drilling Project
IPOD International Phase of Ocean Drilling
ODP Ocean Drilling Program
Key Words: 24 Surficial Geology, Quaternary Geology; Assemblages; Australasia; Cenozoic; Chatham Rise; DSDP Site 594; Deep Sea Drilling Project; Faunal list; Foraminifera; Holocene; IPOD; Invertebrata; Leg 181; Leg 90; Marine environment; Microfossils; New Zealand; ODP Site 1119; ODP Site 1123; ODP Site 1125; Ocean Drilling Program; Pacific Ocean; Paleo-oceanography; Paleoclimatology; Paleoecology; Paleoenvironment; Paleotemperature; Planktonic taxa; Pleistocene; Productivity; Protista; Quaternary; Sea-surface temperature; Solution; South Island; South Pacific; Southwest Pacific; Subtropical Front; Tasman Sea; West Pacific
Coordinates: S423259 S423259 W1780959 W1780959
S414710 S414710 W1712956 W1712956
S453129 S444520 E1745656 E1722336
S432700 S420600 E1685300 E1675400
Record ID: 2012028250
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands