The recent description of Indonesian and Brazilian species of Acanthotetilla motivated the onset of a phylogenic and biogeographic revision of this taxon, to figure whether it had an Atlantic or an Indo-Pacific origin, and whether a Tethyan or southern African route might have been followed. A datamatrix with 27 morphological characters and 63 character states was tabulated and run on PAUP*4.0 ...

High resolution benthic oxygen isotope records combined with radiocarbon datings, from cores retrieved in the North, Equatorial, and South Atlantic are used to establish a reliable chronostratigraphy for the last 60 ky. This common temporal framework enables us to study the timing of the sub-Milankovitch climate variability in the entire surface Atlantic during this period, as re#ected in plank...

The early Pliocene shoaling of the Central American Seaway (CAS), ~4.7-4.2 million years ago (mega annum-Ma), is thought to have strengthened Atlantic Meridional Overturning Circulation (AMOC). The associated increase in northward flux of heat and moisture may have significantly influenced the evolution of Pliocene climate. While some evidence for the predicted increase in North Atlantic Deep W...

[1] Benthic foraminiferal dC and Cd/Ca studies suggest that deep Atlantic circulation during the Last Glacial Maximum was very different from today, with high-nutrient (low dC, high Cd) deep Southern Ocean Water (SOW) penetrating far into the North Atlantic. However, if some glacial dC values are biased by productivity artifacts and/or air-sea exchange processes, then the existing dC data may b...

Introduction Conclusions References Tables Figures Back Close Abstract Introduction Conclusions References Tables Figures Back Close Abstract During the Northern hemisphere winter season, biomass burning is widespread in West Africa, yet the total tropospheric column ozone values (<30 DU) over much of the Tropical Atlantic Ocean (15 • N–5 • S) are relatively low. At the same time, the tro-posph...

This study analyzes 39 Atlantic and seven Pacific benthic δC records to characterize obliquity and precession responses in Atlantic overturning since 3 Ma. Regional benthic δC stacks are also analyzed. A major transition in orbital responses is observed at 1.5–1.6 Ma coincident with the first glacial shoaling of Northern Component Water. Since ∼1.5 Ma, the phases of Atlantic benthic δC records ...

Throughout this congress we have heard many moving testimonies. On Thursday the stories highlighted the presence of Jesus among the peoples of Asia, especially among the poor and marginalised. On Friday stories witnessed to Jesus amidst the great religions of Asia. Today testimonies have focused upon the cultures of Asia. In day-to-day life we do not neatly separate these three aspects. As the ...

A maximum in the strength of Agulhas leakage has been registered at the interface between the Indian and South Atlantic oceans during glacial Termination II (T-II). This presumably transported the salt and heat necessary for maintaining the Atlantic circulation at rates similar to the present day. However, it was never shown whether these waters were effectively incorporated into the South Atla...

This study examines criteria for the existence of two stable states of the Atlantic Meridional Overturning Circulation (AMOC) using a combination of theory and simulations from a numerical coupled atmosphere– ocean climate model. By formulating a simple collection of state parameters and their relationships, the authors reconstruct the North Atlantic Deep Water (NADW) OFF state behavior under a...

The harbor seal is found in all nearshore waters of the Atlantic Ocean and adjoining seas above about 30 o N (Katona et al. 1993). In the western North Atlantic, they are distributed from the eastern Canadian Arctic and Greenland south to southern New England and New York, and occasionally to the Carolinas (Mansfield 1967; Boulva and McLaren 1979; Katona et al. 1993; Gilbert and Guldager 1998; ...