Glacial–interglacial (MIS 1–10) migrations of the Subtropical Front across ODP Site 1119, Canterbury Bight, Southwest Pacific Ocean

Carter, R.M; Gammon, P; Millwood, L

doi:10.1016/s0025-3227(04)00017-9

Cited by 44 publications

(54 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carter et al, 2004] when currents in the Bounty Trough (e.g. Bounty Gyre - Figure 1) are expected to have been more vigorous [McCave et al, 2008;Neil et al, 2004].…”

Section: Formation Mechanisms Of Gef'smentioning

confidence: 99%

Gas escape features off New Zealand: Evidence of massive release of methane from hydrates

Davy

Pecher

Wood

et al. 2010

Geophysical Research Letters

View full text Add to dashboard Cite

Multibeam swath bathymetry data from the southwest margin of the Chatham Rise, New Zealand, show gas release features over a region of at least 20,000 km2. Gas escape features, interpreted to be caused by gas hydrate dissociation, include an estimated a) 10 features, 8–11 km in diameter and b) 1,000 features, 1–5 km in diameter, both at 800–1,100 m water depth. An estimated 10,000 features, ∼150 m in diameter, are observed at 500–700 m water depth. In the latter depth range sub‐bottom profiles show similar gas escape features (pockmarks) at disconformities interpreted to mark past sea‐level low stands. The amount of methane potentially released from hydrates at each of the largest features is ∼7*1012 g. If the methane from a single event at one 8–11 km scale pockmark reached the atmosphere, it would be equivalent to ∼3% of the current annual global methane released from natural sources into the atmosphere.

show abstract

“…Carter et al, 2004] when currents in the Bounty Trough (e.g. Bounty Gyre - Figure 1) are expected to have been more vigorous [McCave et al, 2008;Neil et al, 2004].…”

Section: Formation Mechanisms Of Gef'smentioning

confidence: 99%

Gas escape features off New Zealand: Evidence of massive release of methane from hydrates

Davy

Pecher

Wood

et al. 2010

Geophysical Research Letters

View full text Add to dashboard Cite

show abstract

“…The earlier history of the frontal systems is therefore poorly constrained. In addition, the climatic record of Site 1119 correlates well with that from the Vostok ice core (Carter et al, 2004b), and drilling deeper could provide an extended proxy for Antarctic continental air temperatures. Furthermore, drift D11 can be considered the type example of a late, simple elongate drift, and it displays all of the component seismic facies (base, core, and crest) (Lu et al, 2003).…”

Section: Determine Sediment Drift Depositional Histories and Paleoceamentioning

confidence: 70%

“…The δ 13 C record at Site 1119 is interpreted as reflecting glacial-interglacial alternations of subtropical and subantarctic water caused by movement of the STF across the site over at least the last two glacial-interglacial cycles (Carter et al, 2004a(Carter et al, , 2004b. Falling sea level deflected the front basinward during glacial periods, with the counterintuitive result that the site experienced a warmer water mass during glacials; intervals of interbedded sand and mud mark the passage of the front basinward and landward across the site (Carter et al, 2004b). Sand beds occurring near the peak of glaciation are interpreted to represent the proximity of the STF and SAF, which may coalesce near the site, intensifying current strength (Carter et al, 2004b).…”

Section: Sediment Drifts and Paleoflowmentioning

confidence: 99%

“…Falling sea level deflected the front basinward during glacial periods, with the counterintuitive result that the site experienced a warmer water mass during glacials; intervals of interbedded sand and mud mark the passage of the front basinward and landward across the site (Carter et al, 2004b). Sand beds occurring near the peak of glaciation are interpreted to represent the proximity of the STF and SAF, which may coalesce near the site, intensifying current strength (Carter et al, 2004b).…”

Section: Sediment Drifts and Paleoflowmentioning

confidence: 99%

“…Similar cycles at nearby Site 1119 were shown to contain temperate-water planktonic foraminifers in the basal sand (Shipboard Scientific Party, 1999a) with a colder water microfauna in the intervening muds; these facts are consistent with each such cycle representing a full interglacial-glacial rhythm (though perhaps with a diastem of a few thousand years represented by the sharp, burrowed base to the sand units). These rhythms are interpreted as resulting from oscillations in flow intensity of cold-water SAMW, perhaps linked also to migrations of the Southland (Subtropical) Front across the site (Carter et al, 2004b). The rhythms also have to be influenced by terrestrial sediment supply, which is likely highest at lowstands and minimal to absent during highstands.…”

Section: Late Quaternary To Holocene Glacial-interglacial Cyclesmentioning

confidence: 99%

See 2 more Smart Citations

Untitled

Fulthorpe

Hoyanagi

Blum

et al. 2010

IODP Preliminary Report

View full text Add to dashboard Cite

Changes in the position of the Subtropical Front south of New Zealand since the last glacial period

et al. 2015

View full text Add to dashboard Cite

This study fills an important gap in our understanding of past changes in the Southern Subtropical Front (S-STF) in the southwest Pacific Ocean. Paleo-sea surface temperatures (SST) were estimated from planktic foraminiferal census counts from cores straddling the modern S-STF in the Solander Trough, south of New Zealand. The estimated SST were compared for 6 time slices; glacial period (25-21 ka), Last Glacial Maximum (LGM; 21-18 ka), early deglaciation (18-16 ka), late deglacial/early Holocene period (14-8 ka), mid-Holocene period (8-4 ka), and late Holocene period (4-0 ka). The position of the S-STF was determined by two methods:(1) the location of the 10°C isotherm and (2) the location of the highest SST gradients. These new results suggest that the S-STF was not continuous between east and west of New Zealand during the glacial period. Steep SST gradients indicate that a strong S-STF rapidly shifted south during the LGM and early deglaciation. During the late deglacial and Holocene periods the position of the S-STF differs between the two methods with reduced SST gradients, suggesting a more diffuse S-STF in the Solander Trough at this time. The glacial SST data suggest that the S-STF shifted north to the west of New Zealand, while to the east there was a stronger SST gradient across the front. This was possibly the result of an increased wind stress curl, which could have been caused by stronger, or more northerly Southern Hemisphere westerly winds (SHWW), or a merging of the SHWW split jet in this region.

show abstract

Glacial–interglacial (MIS 1–10) migrations of the Subtropical Front across ODP Site 1119, Canterbury Bight, Southwest Pacific Ocean

Cited by 44 publications

References 60 publications

Gas escape features off New Zealand: Evidence of massive release of methane from hydrates

Gas escape features off New Zealand: Evidence of massive release of methane from hydrates

Untitled

Changes in the position of the Subtropical Front south of New Zealand since the last glacial period

Contact Info

Product

Resources

About