Discussion of the results of the investigations of organic matter in the SW Atlantic, in the Polar Frontal Zone. The present goal was organic matter distribution at the period of its accumulation and bacterioplankton activization anomalously warm
Bau der Lithosphäre in der Ubergangszone von der Mitteleuropäischen Senke zum Atlantischen Ozean. (Structure of the lithosphère in the transition zone between the Central-European depression and AtlanticOcean)
Atlantique ; Atlantique Nord-Est ; Europe ; Europe centrale ; Europe du nord ; Géographie physique ; Géophysique ; Interface terre-océan ; Lithosphère
Geodynamical processes and interrelations between the opening of the Atlanticocean, the development of transition zone and the Central-European depression are analyzed by means of investigations of the transition zone between the Central-European
depression and the Atlanticocean. A scheme of the depths of the asthenospere-lithospere border is discussed. (HL).
Africa ; AtlanticOcean ; Atmospheric dynamics ; Climatic warming ; Holocene ; Meltwater ; Monsoon ; North AtlanticOcean ; Ocean atmosphere interaction ; Palaeoclimate ; Precipitation ; South AtlanticOcean ; Surface temperature ; Surface water
Afrique ; Atlantique ; Atlantique Nord ; Atlantique Sud ; Dynamique de l'atmosphère ; Eau de fonte ; Eau de surface ; Gradient thermique ; Holocène ; Interaction océan-atmosphère ; Mousson ; Paléoclimat ; Précipitation ; Réchauffement climatique
The deglacial pattern of a high-resolution alkenone-derived temperature record from the southeastern tropical Atlantic was compared with one from the northeastern subtropical Atlantic. During Termination 1b, surface waters in the eastern tropical
Atlantic (6°S) reached modern temperatures, whereas those in the subtropical northeastern Atlantic (21°N) were still considerably colder than today. This asymmetrical warming may reflect meltwater-induced reductions in the northward heat transport and helps
Linkages between atmospheric circulation, climate and streamflow in the northern North Atlantic : research prospects
AtlanticOcean ; Atmospheric circulation ; Canada ; Climate ; Climate oscillation ; Climatic anomaly ; Iceland ; Model ; North AtlanticOcean ; Northern Europe ; Ocean atmosphere interaction ; Precipitation ; Stream flow ; United States of America
Anomalie climatique ; Atlantique ; Atlantique Nord ; Canada ; Circulation atmosphérique ; Climat ; Ecoulement fluvial ; Etats-Unis ; Europe du Nord ; Interaction océan-atmosphère ; Islande ; Modèle ; Oscillation climatique ; Précipitation
The main focus lies with climatic and hydrologic implications of the major circulation patterns in the northern North Atlantic, namely the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO). The studies reviewed here reveal key
relationships between circulation, climate and streamflow across the northern North Atlantic, allowing the construction of a simple conceptual model for this system. To help promote a better understanding of the system, several research gaps are identified
Forms of unusual patterned ground: examples from the Falkland Islands, South Atlantic
Aeolian features ; AtlanticOcean ; Earth surface processes ; Island ; Lacustrine sediment ; Patterned ground ; Peat ; Sand ; Sediment transport ; South AtlanticOcean
This paper descibes the characteristics of, and outlines the most likely origins for, three forms of unusual patterned ground observed in the Falkland Islands, South Atlantic. The features here described are not products of frost-related processes
Tendances actuelles de l'évolution du niveau stérique de l'océan dans l'Atlantique Nord
AtlanticOcean ; Interannual variability ; North AtlanticOcean ; Sea level ; World ocean
Atlantique ; Atlantique Nord ; Niveau marin ; Océan mondial ; Variabilité interannuelle
Principaux facteurs déterminant les changements de long terme du niveau de l'océan. Principaux moyens d''obtention de l'information sur les changements du niveau de l'Océan mondial. Méthode de calcul du niveau stérique de l'océan. Méthode
Air temperature ; AtlanticOcean ; Atmospheric circulation ; Climate oscillation ; Climatic anomaly ; Heat exchange ; North AtlanticOcean ; Ocean ; Ocean atmosphere interaction ; Surface temperature
Anomalie climatique ; Atlantique ; Atlantique Nord ; Circulation atmosphérique ; Echange thermique ; Interaction océan-atmosphère ; Océan ; Oscillation climatique ; Température de l'air ; Température de surface
Relation entre la température de la surface de l'océan et les phases de cette oscillation. Effet de l'échange thermique de l'océan avec l'atmosphère sur la formation des phases de l'oscillation. Rôle des processus synoptiques dans la formation de la
This article reviews research on the Younger Dryas event and discusses the implications of this research for understanding the role of the North AtlanticOcean in abrupt climatic change. The Younger Dryas has been linked with a large-scale shift
of the North Atlantic thermohaline circulation (THC) to a near glacial mode with a consequent reduction in northward heat transport. This shift in the THC may have been triggered by a discharge of Laurentide ice, combined with meltwater inputs from several
This paper presents new Sea Surface Temperature (SST) estimates from the east-equatorial South AtlanticOcean and compares them with existing data for this area and the nearby African continent. Ocean Drilling Program (ODP) core 1077A-1H
. The monsoon variations correlate closely with variations in North Atlantic drift-ice tracers that represent episodic advection of drift ice and cold polar surface water southward and eastward into warmer subpolar water. The correspondence of these records over
the full span of Holocene time implies a close relationship between North Atlantic climate and the monsoon climate of central China.
Plate kinematic implications of Atlantic Equatorial fracture zone trends
We present a plate kinematic evolution of the South Atlantic which is based largely on the determination of the equatorial fracture zone trends between the African and South American continental margins. Four main opening phases are dated by oceanic
magnetic anomalies, notably MO, A34 and A13, and are correlated with volcanism and tectonic events on land around the South AtlanticOcean. The Ceara and Sierra Leone rises are probably of oceanic origin and were created 80m.y. ago or later in their present
Atlantique ; Bibliographie ; Droit de la mer ; Exploitation des mers ; Exploration ; Faune marine ; Généralités sur la géographie ; Ile ; Océan ; Océanologie
913 références d'ouvrages et articles principalement en anglais sur l'océan lui-même et les îles. 16 chapitres dont 4 développés : histoire des découvertes et des transports, océanographie physique, îles de l'Atlantique Nord et de l'Atlantique Sud
Comparison between satellite and ship measurements of sea surface temperature in the north-east AtlanticOcean in Special issue : Applications of AVHRR data.
This tentative approach shows that freshwater diatoms in Atlantic cores may be a good tool for reconstructing paleoclimates and for establishing continent-ocean correlations if species analyses are made and if the continental distribution