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ScholarsArchive at Oregon State University
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Benthic foraminiferal δ¹³C data from site 502 in the Caribbean Sea
(sill depth 1800 m) indicate that throughout the past 2.6 m.y., glacial δ¹³C values in the
middepth Atlantic were higher during glaciations than interglaciations. This is...
1995-06 (iso8601)
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This article investigates the origins of the variability of the Malvinas Current (MC)
transport using the results of an eddy-permitting ocean general circulation model. First, the
dynamical links between the variabilities of the MC and the...
2008 (iso8601)
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We evaluate the reliability of statistical estimates of sea surface temperature (SST) derived
from planktonic foraminiferal faunas using the modern analog method and the Imbrie-Kipp method.
Global core top faunas provide a calibration data set,...
1997-04 (iso8601)
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Plankton tows from the northern California Current constrain biological and physical
influences on living planktonic foraminifera. In this region, the dominant factors controlling the
size and distribution of symbiotic and asymbiotic species are...
1995-12 (iso8601)
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Multiple paleoceanographic proxies in a zonal transect across the California Current
near 42°N record modern and last glacial maximum (LGM) thermal and nutrient gradients. The
offshore thermal gradient, derived from foraminiferal species...
1997-04 (iso8601)
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The mass accumulation rates of sedimentary components (carbonate, organic carbon, opal, barite, reactive
phosphate, iron, terrigenous minerals, etc.) are used in many paleoceanographic reconstructions to learn about
temporal and spatial changes in...
2004 (iso8601)
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Statistical transfer functions relate living planktonic foraminiferal species of the central equatorial Pacific to
measured sea surfce temperature, integrated primary productivity, and mixed-layer depth. The faunal estimates
successfully...
1998-02 (iso8601)
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Seamounts are windows into the deep Earth that are helping to
elucidate various deep Earth processes. For example, thermal and mechanical
properties of oceanic lithosphere can be determined from the flexing of oceanic
crust caused by the growth of...
2010-03 (iso8601)
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Lō`ihi Seamount defines the volcanically
active, leading edge in the Hawaiian
hotspot chain. It is located on the submarine
flank of Mauna Loa, 30 km south
of the island of Hawai`i. Lō`ihi’s summit
is at 975-m water depth (Pisces Peak),
and the...
2010-03 (iso8601)
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The Agulhas Current is the western boundary current
of the South Indian Ocean and is thought to play an
important role in the global overturning circulation. In this
study, we investigate the contribution from the wind stress
field over each ocean...
2007 (iso8601)
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The objective of this article is to present evidence for
the existence of seasonal variability in sea surface height
(SSH) anomaly in the Agulhas Retroflection region.
TOPEX/POSEIDON altimeter data are used to estimate
seasonal changes in the...
1998-12-01 (iso8601)
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Seamounts are ubiquitous features of the seafloor that form part of
the fabric of oceanic crust. When a seamount enters a subduction zone, it has a major
affect on forearc morphology, the uplift history of the island arc, and the structure of
the...
2010-03 (iso8601)
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Seamount research, more often than not,
is carried out by highly specialized science
teams with narrowly focused science objectives.
As a result, different seamount science
disciplines often do not collaborate or are
not even aware of each other....
2010-03 (iso8601)
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Vailulu’u seamount is an active underwater
volcano that marks the end of
the Samoan hotspot trail (Hart et al.,
2000). Vailulu’u has a simple conical
morphology (Figure 1) with a largely
enclosed volcanic crater at relatively
shallow water depths,...
2010-03 (iso8601)
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The general circulation model of Bryan (1969), modified by the introduction of open boundary
conditions at the Drake Passage and between Africa and Antarctica, has been used to study the mass
and heat budgets of the South Atlantic Ocean. The model...
1993-01-15 (iso8601)
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Reading through this issue of Oceanography, it will become
apparent that researchers in different disciplines see their
seamounts in quite different ways. The term seamount has been
defined many times (e.g., Menard, 1964; Wessel, 2001; Schmidt...
2010-03 (iso8601)
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We used wavelet analyses of sea surface height (SSH) from >13 years of satellite
altimeter data to characterize the variability in mesoscale circulation in the northern
California Current (35°N–49°N) and explore the mechanisms of variability. We...
2008 (iso8601)
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[1] Borehole temperature-depth profiles contain a record of surface ground temperature
(SGT) changes with time and complement surface air temperature (SAT) analysis to infer
climate change over multiple centuries. Ground temperatures are generally...
2004 (iso8601)
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Present methods used to retrieve altimeter data do not provide reliable estimates of
sea surface height (SSH) in the nearshore region, resulting in a measurement gap of
25–50 km next to the coast. In the present work, gridded SSH fields produced...
2008 (iso8601)
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Temperature-depth profiles in borehole CC-I,
northwestern Utah, were measured in 1978, 1990, and 1992.
Borehole temperatures below 80 m depth are highly
reproducible over the 14 year period indicating long term
thermal stability. A slowly changing...
1993-09-15 (iso8601)
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In this paper, we evaluate the temporal and horizontal resolution of geostrophic
surface velocities calculated from TOPEX satellite altimeter heights. Moored velocities
(from vector-averaging current meters and an acoustic Doppler current...
1997-06-15 (iso8601)
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The circulation of the southwestern Atlantic Ocean is dominated by the Subtropical Gyre
and the confluence of the Brazil and Malvinas currents. Observations indicate that the latitude
of this confluence changes seasonally, lying farther north...
1993-10-15 (iso8601)
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Analytical and numerical models are used to study the effects of
a meridional ridge on the propagation of barotropic Rossby waves produced by
distant wind stress forcing. The analytical model illustrates the qualitative aspects
of the problem by...
1995-09-15 (iso8601)
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New thermal data from 18–24 Ma lithosphere on the
Cocos Plate delineate contrasting subsurface thermal
conditions in adjacent sections of crust. Heat flow through
seafloor created at the East Pacific Rise is generally
suppressed by ~70% relative...
2003 (iso8601)
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