Author: BEATRIX.. LOPEZ-DE-ARIAS
Publisher:
ISBN:
Category :
Languages : fr
Pages :
Book Description
L'EVENEMENT EL NINO, ASSOCIE A DES FLUCTUATIONS INTERANNUELLES DE GRANDE AMPLITUDE DE LA TEMPERATURE DE SURFACE DE LA MER DANS L'OCEAN PACIFIQUE EST ASSOCIE AU PHENOMENE CLIMATIQUE INTERANNUEL LE PLUS IMPORTANT. L'EFFET D'UNE TELLE ANOMALIE DE TEMPERATURE OCEANIQUE SUPERFICIELLE SUR LA CIRCULATION ATMOSPHERIQUE PLANETAIRE EST D'ABORD SIMULEE PAR UN MODELE DE CIRCULATION ATMOSPHERIQUE GENERALE (GCM). AU COURS D'UNE PREMIERE ETAPE, SA REPONSE EST ANALYSEE PAR UNE METHODE STATISTIQUE UNIVARIEE QUI FAIT APPARAITRE UN SIGNAL CLIMATIQUE DE GRANDE AMPLITUDE DANS LES REGIONS TROPICALES, EN ACCORD AVEC DES OBSERVATIONS. CETTE REPONSE EST ENSUITE COMPAREE DE FACON RIGOUREUSE A LA REPONSE D'UN MODELE D'ATMOSPHERE TROPICALE LINEAIRE ET STATIONNAIRE MAIS SUFFISAMMENT REALISTE, A L'AIDE D'UNE METHODE STATISTIQUE MULTIVARIEE. CETTE DERNIERE TIENT COMPTE DES CORRELATIONS SPATIALES ET PERMET DE DEFINIR UNE SIGNIFICATION STATISTIQUE GLOBALE DU SIGNAL ANALYSE POUR LES TROIS COMPOSANTES DE LA VITESSE. CE MODELE N'EST VALABLE QUE POUR LA CIRCULATION MOYENNE ET EST FORCE PAR L'ASYMETRIE ZONALE DU CHAUFFAGE DIABATIQUE MOYEN ISSU DE SIMULATIONS GCM EFFECTUEES DANS DES CONDITIONS CLIMATIQUES NORMALES, PERTURBEES PAR UNE ANOMALIE DE LA TEMPERATURE OCEANIQUE DE SURFACE DE TYPE EL NINO ET PAR LEUR DIFFERENCE. DANS LE PREMIER CAS SA REPONSE REPRESENTE PARTICULIEREMENT BIEN LE SIGNAL GCM, DANS LE SECOND LA QUALITE DES RESULTATS EST LEGEREMENT INFERIEURE MAIS DEMEURE SATISFAISANTE. L'ACCORD STATISTIQUE SE DEGRADE LORSQUE L'ON INTERPRETE LINEAIREMENT LE SIGNAL REPRESENTATIF DE L'ANOMALIE DE CIRCULATION ATMOSPHERIQUE. LA TAILLE DE L'ECHANTILLON DE SIMULATIONS EST ALORS TROP FAIBLE POUR CONSTITUER UNE BASE STATISTIQUE STABLE ET ELIMINER SUFFISAMMENT LE BRUIT ASSOCIE AUX NON-LINEARITES, AUX PHENOMENES TRANSITOIRES ET A LA FORTE VARIABILITE NATURELLE DU GCM DANS LES REGIONS TROPICALES. L'ESSENTIEL DE L'ANOMALIE DE CIRCULA
REPONSE DE L'ATMOSPHERE TROPICALE A UNE ANOMALIE DE TEMPERATURE OCEANIQUE SUPERFICIELLE SITUEE DANS L'OCEAN PACIFIQUE EQUATORIAL
Author: BEATRIX.. LOPEZ-DE-ARIAS
Publisher:
ISBN:
Category :
Languages : fr
Pages :
Book Description
L'EVENEMENT EL NINO, ASSOCIE A DES FLUCTUATIONS INTERANNUELLES DE GRANDE AMPLITUDE DE LA TEMPERATURE DE SURFACE DE LA MER DANS L'OCEAN PACIFIQUE EST ASSOCIE AU PHENOMENE CLIMATIQUE INTERANNUEL LE PLUS IMPORTANT. L'EFFET D'UNE TELLE ANOMALIE DE TEMPERATURE OCEANIQUE SUPERFICIELLE SUR LA CIRCULATION ATMOSPHERIQUE PLANETAIRE EST D'ABORD SIMULEE PAR UN MODELE DE CIRCULATION ATMOSPHERIQUE GENERALE (GCM). AU COURS D'UNE PREMIERE ETAPE, SA REPONSE EST ANALYSEE PAR UNE METHODE STATISTIQUE UNIVARIEE QUI FAIT APPARAITRE UN SIGNAL CLIMATIQUE DE GRANDE AMPLITUDE DANS LES REGIONS TROPICALES, EN ACCORD AVEC DES OBSERVATIONS. CETTE REPONSE EST ENSUITE COMPAREE DE FACON RIGOUREUSE A LA REPONSE D'UN MODELE D'ATMOSPHERE TROPICALE LINEAIRE ET STATIONNAIRE MAIS SUFFISAMMENT REALISTE, A L'AIDE D'UNE METHODE STATISTIQUE MULTIVARIEE. CETTE DERNIERE TIENT COMPTE DES CORRELATIONS SPATIALES ET PERMET DE DEFINIR UNE SIGNIFICATION STATISTIQUE GLOBALE DU SIGNAL ANALYSE POUR LES TROIS COMPOSANTES DE LA VITESSE. CE MODELE N'EST VALABLE QUE POUR LA CIRCULATION MOYENNE ET EST FORCE PAR L'ASYMETRIE ZONALE DU CHAUFFAGE DIABATIQUE MOYEN ISSU DE SIMULATIONS GCM EFFECTUEES DANS DES CONDITIONS CLIMATIQUES NORMALES, PERTURBEES PAR UNE ANOMALIE DE LA TEMPERATURE OCEANIQUE DE SURFACE DE TYPE EL NINO ET PAR LEUR DIFFERENCE. DANS LE PREMIER CAS SA REPONSE REPRESENTE PARTICULIEREMENT BIEN LE SIGNAL GCM, DANS LE SECOND LA QUALITE DES RESULTATS EST LEGEREMENT INFERIEURE MAIS DEMEURE SATISFAISANTE. L'ACCORD STATISTIQUE SE DEGRADE LORSQUE L'ON INTERPRETE LINEAIREMENT LE SIGNAL REPRESENTATIF DE L'ANOMALIE DE CIRCULATION ATMOSPHERIQUE. LA TAILLE DE L'ECHANTILLON DE SIMULATIONS EST ALORS TROP FAIBLE POUR CONSTITUER UNE BASE STATISTIQUE STABLE ET ELIMINER SUFFISAMMENT LE BRUIT ASSOCIE AUX NON-LINEARITES, AUX PHENOMENES TRANSITOIRES ET A LA FORTE VARIABILITE NATURELLE DU GCM DANS LES REGIONS TROPICALES. L'ESSENTIEL DE L'ANOMALIE DE CIRCULA
Publisher:
ISBN:
Category :
Languages : fr
Pages :
Book Description
L'EVENEMENT EL NINO, ASSOCIE A DES FLUCTUATIONS INTERANNUELLES DE GRANDE AMPLITUDE DE LA TEMPERATURE DE SURFACE DE LA MER DANS L'OCEAN PACIFIQUE EST ASSOCIE AU PHENOMENE CLIMATIQUE INTERANNUEL LE PLUS IMPORTANT. L'EFFET D'UNE TELLE ANOMALIE DE TEMPERATURE OCEANIQUE SUPERFICIELLE SUR LA CIRCULATION ATMOSPHERIQUE PLANETAIRE EST D'ABORD SIMULEE PAR UN MODELE DE CIRCULATION ATMOSPHERIQUE GENERALE (GCM). AU COURS D'UNE PREMIERE ETAPE, SA REPONSE EST ANALYSEE PAR UNE METHODE STATISTIQUE UNIVARIEE QUI FAIT APPARAITRE UN SIGNAL CLIMATIQUE DE GRANDE AMPLITUDE DANS LES REGIONS TROPICALES, EN ACCORD AVEC DES OBSERVATIONS. CETTE REPONSE EST ENSUITE COMPAREE DE FACON RIGOUREUSE A LA REPONSE D'UN MODELE D'ATMOSPHERE TROPICALE LINEAIRE ET STATIONNAIRE MAIS SUFFISAMMENT REALISTE, A L'AIDE D'UNE METHODE STATISTIQUE MULTIVARIEE. CETTE DERNIERE TIENT COMPTE DES CORRELATIONS SPATIALES ET PERMET DE DEFINIR UNE SIGNIFICATION STATISTIQUE GLOBALE DU SIGNAL ANALYSE POUR LES TROIS COMPOSANTES DE LA VITESSE. CE MODELE N'EST VALABLE QUE POUR LA CIRCULATION MOYENNE ET EST FORCE PAR L'ASYMETRIE ZONALE DU CHAUFFAGE DIABATIQUE MOYEN ISSU DE SIMULATIONS GCM EFFECTUEES DANS DES CONDITIONS CLIMATIQUES NORMALES, PERTURBEES PAR UNE ANOMALIE DE LA TEMPERATURE OCEANIQUE DE SURFACE DE TYPE EL NINO ET PAR LEUR DIFFERENCE. DANS LE PREMIER CAS SA REPONSE REPRESENTE PARTICULIEREMENT BIEN LE SIGNAL GCM, DANS LE SECOND LA QUALITE DES RESULTATS EST LEGEREMENT INFERIEURE MAIS DEMEURE SATISFAISANTE. L'ACCORD STATISTIQUE SE DEGRADE LORSQUE L'ON INTERPRETE LINEAIREMENT LE SIGNAL REPRESENTATIF DE L'ANOMALIE DE CIRCULATION ATMOSPHERIQUE. LA TAILLE DE L'ECHANTILLON DE SIMULATIONS EST ALORS TROP FAIBLE POUR CONSTITUER UNE BASE STATISTIQUE STABLE ET ELIMINER SUFFISAMMENT LE BRUIT ASSOCIE AUX NON-LINEARITES, AUX PHENOMENES TRANSITOIRES ET A LA FORTE VARIABILITE NATURELLE DU GCM DANS LES REGIONS TROPICALES. L'ESSENTIEL DE L'ANOMALIE DE CIRCULA
INFLUENCE DES COURANTS DE SURFACE SUR LA TEMPERATURE SUPERFICIELLE DE L'OCEAN PACIFIQUE TROPICAL
Author: FABRICE.. BONJEAN
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
Book Description
LE TRANSPORT DE CHALEUR PAR LES COURANTS DE SURFACE DE L'OCEAN PACIFIQUE TROPICAL EST UN PROCESSUS CAPITAL DANS LE DEROULEMENT DU PHENOMENE CLIMATIQUE ENSO (EL NINO-SOUTHERN OSCILLATION). UN CHAMP DE VITESSE DE SURFACE FUT CONSTRUIT A PARTIR DE MESURES PAR BOUEES FIXES ET DERIVANTES ET FUT UTILISE POUR ESTIMER L'EFFET DE L'ADVECTION HORIZONTALE SUR LES VARIATIONS DE LA SST PENDANT LA PERIODE 1987-1993. SI LES TRANSPORTS ADVECTIFS HORIZONTAUX SONT IMPORTANTS POUR MAINTENIR L'ETAT MOYEN, LEUR ROLE EST EN REVANCHE FAIBLE EN FLUCTUATION SAISONNIERE MOYENNE, NOTAMMENT POUR L'EXTENSION VERS L'OUEST DES FLUCTUATIONS DE TEMPERATURE DANS LA LANGUE D'EAU FROIDE. A L'ECHELLE INTERANNUELLE, L'ADVECTION ZONALE EST INFLUENTE SUR UNE GRANDE PARTIE DU PACIFIQUE EQUATORIAL, A L'EXCEPTION DE L'EXTREME EST DU BASSIN. L'ADVECTION MERIDIENNE EST DOMINEE PAR L'ADVECTION PAR LA VITESSE MOYENNE DE L'ANOMALIE DE TEMPERATURE ET A UNE INFLUENCE PLUS FAIBLE ET INTERMITTENTE, LOCALISEE A L'EST. LE MODELE DE CIRCULATION GENERALE DU LODYC (OPA) ET CELUI DU HADLEY CENTER FURENT COMPAREES AUX OBSERVATIONS. LES COURANTS DE SURFACE AINSI QUE LES COMPORTEMENTS ADVECTIFS SIMULES SONT DIFFERENTS ET LES RESULTATS DEPENDENT A LA FOIS DU FORCAGE DE VENT UTILISE (SIMULATION ARPEGE POUR OPA, ANALYSE D'OBSERVATION FSU POUR HADLEY) ET DE LA CONCEPTION DES MODELES, EN PARTICULIER LA PARAMETRISATION DES PROCESSUS TURBULENTS. LE CYCLE SAISONNIER MOYEN DES COURANTS OPA / ARPEGE EST PLUS PROCHE DES OBSERVATIONS QU'HADLEY / FSU, A L'INVERSE DES VARIATIONS INTERANNUELLES. POUR CELLES-CI, L'INFLUENCE DE L'ANOMALIE DE VENT EST DIRECTE A L'OUEST D'ENVIRON 150\W ET NON LOCALE A L'EST OU LES DEUX SIMULATIONS MONTRENT DES CONFIGURATIONS DIFFERENTES. D'AUTRE PART, LES ANOMALIES D'ADVECTION ZONALE ET MERIDIENNE D'OPA / ARPEGE INFLUENCENT PLUS FAIBLEMENT LA SST QUE NE LE FONT LES ANOMALIES D'ADVECTION OBSERVEES, TANDIS QU'HADLEY / FSU SIMULE UN BEAUCOUP PLUS FORT IMPACT DE L'ADVECTION VIS-A-VIS DES OBSERVATIONS.
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
Book Description
LE TRANSPORT DE CHALEUR PAR LES COURANTS DE SURFACE DE L'OCEAN PACIFIQUE TROPICAL EST UN PROCESSUS CAPITAL DANS LE DEROULEMENT DU PHENOMENE CLIMATIQUE ENSO (EL NINO-SOUTHERN OSCILLATION). UN CHAMP DE VITESSE DE SURFACE FUT CONSTRUIT A PARTIR DE MESURES PAR BOUEES FIXES ET DERIVANTES ET FUT UTILISE POUR ESTIMER L'EFFET DE L'ADVECTION HORIZONTALE SUR LES VARIATIONS DE LA SST PENDANT LA PERIODE 1987-1993. SI LES TRANSPORTS ADVECTIFS HORIZONTAUX SONT IMPORTANTS POUR MAINTENIR L'ETAT MOYEN, LEUR ROLE EST EN REVANCHE FAIBLE EN FLUCTUATION SAISONNIERE MOYENNE, NOTAMMENT POUR L'EXTENSION VERS L'OUEST DES FLUCTUATIONS DE TEMPERATURE DANS LA LANGUE D'EAU FROIDE. A L'ECHELLE INTERANNUELLE, L'ADVECTION ZONALE EST INFLUENTE SUR UNE GRANDE PARTIE DU PACIFIQUE EQUATORIAL, A L'EXCEPTION DE L'EXTREME EST DU BASSIN. L'ADVECTION MERIDIENNE EST DOMINEE PAR L'ADVECTION PAR LA VITESSE MOYENNE DE L'ANOMALIE DE TEMPERATURE ET A UNE INFLUENCE PLUS FAIBLE ET INTERMITTENTE, LOCALISEE A L'EST. LE MODELE DE CIRCULATION GENERALE DU LODYC (OPA) ET CELUI DU HADLEY CENTER FURENT COMPAREES AUX OBSERVATIONS. LES COURANTS DE SURFACE AINSI QUE LES COMPORTEMENTS ADVECTIFS SIMULES SONT DIFFERENTS ET LES RESULTATS DEPENDENT A LA FOIS DU FORCAGE DE VENT UTILISE (SIMULATION ARPEGE POUR OPA, ANALYSE D'OBSERVATION FSU POUR HADLEY) ET DE LA CONCEPTION DES MODELES, EN PARTICULIER LA PARAMETRISATION DES PROCESSUS TURBULENTS. LE CYCLE SAISONNIER MOYEN DES COURANTS OPA / ARPEGE EST PLUS PROCHE DES OBSERVATIONS QU'HADLEY / FSU, A L'INVERSE DES VARIATIONS INTERANNUELLES. POUR CELLES-CI, L'INFLUENCE DE L'ANOMALIE DE VENT EST DIRECTE A L'OUEST D'ENVIRON 150\W ET NON LOCALE A L'EST OU LES DEUX SIMULATIONS MONTRENT DES CONFIGURATIONS DIFFERENTES. D'AUTRE PART, LES ANOMALIES D'ADVECTION ZONALE ET MERIDIENNE D'OPA / ARPEGE INFLUENCENT PLUS FAIBLEMENT LA SST QUE NE LE FONT LES ANOMALIES D'ADVECTION OBSERVEES, TANDIS QU'HADLEY / FSU SIMULE UN BEAUCOUP PLUS FORT IMPACT DE L'ADVECTION VIS-A-VIS DES OBSERVATIONS.
Understanding the Role of Stochastic Atmospheric Forcing in Tropical Pacific Decadal Variability and ENSO Modulation
Author: Tianyi Sun (Ph. D.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
Book Description
Interdecadal variability of the tropical Pacific affects global hydroclimate and ecosystem and is suggested to modulate global mean temperature in the past century. It has been long acknowledged that Pacific decadal variability can be generated in the extratropics through integration of stochastic atmospheric forcing by the ocean mixed layer. However, it remains unclear how the extratropical signal propagates into the tropical Pacific and forms a basin-wide anomaly pattern and how the resultant tropical Pacific decadal variability (TPDV) interacts with the El Niño-Southern Oscillation (ENSO), the dominant mode of interannual climate variability. To answer this question, a suite of climate model experiments is conducted with small time-invariant surface heat flux anomalies associated with the leading atmospheric modes in the extratropical South and North Pacific. The results show that subtropical ocean-atmosphere anomalies driven by the surface heat flux forcing propagate into the tropical Pacific mainly through thermodynamic ocean-atmosphere interactions, with ocean dynamics playing an important role in modifying the equatorial sea surface temperature (SST) response. The associated changes in the tropical Pacific mean state not only extend climate anomalies into the other hemisphere through atmospheric teleconnections, but also significantly affect the properties of ENSO. In particular, the ENSO-like TPDV affects the relative frequency of El Niño and La Niña. To investigate the causality and mechanism of this linkage, a separate set of climate model experiments is conducted by imposing surface heat flux anomalies associated with the ENSO-like TPDV in the tropical Pacific. The forced mean state change affects the frequency of El Niño and La Niña events by modulating the SST contrast between the tropical Pacific and the Indian/Atlantic Oceans and associated zonal wind anomalies in the western Pacific. This study presents in detail the atmospheric and oceanic mechanisms by which extratropical atmospheric forcing induces basin-wide coherent patterns of TPDV that can further affect ENSO characteristics, which has not been systematically studied in fully coupled climate models. The results also show that the tropical Pacific is more strongly influenced by the South Pacific through both thermodynamic processes and ocean dynamics. The strong oceanic linkage to the South Pacific allows delayed negative oceanic feedback to effectively affect the equatorial Pacific SST, which may be important for setting up the time scales of TPDV
Publisher:
ISBN:
Category :
Languages : en
Pages : 262
Book Description
Interdecadal variability of the tropical Pacific affects global hydroclimate and ecosystem and is suggested to modulate global mean temperature in the past century. It has been long acknowledged that Pacific decadal variability can be generated in the extratropics through integration of stochastic atmospheric forcing by the ocean mixed layer. However, it remains unclear how the extratropical signal propagates into the tropical Pacific and forms a basin-wide anomaly pattern and how the resultant tropical Pacific decadal variability (TPDV) interacts with the El Niño-Southern Oscillation (ENSO), the dominant mode of interannual climate variability. To answer this question, a suite of climate model experiments is conducted with small time-invariant surface heat flux anomalies associated with the leading atmospheric modes in the extratropical South and North Pacific. The results show that subtropical ocean-atmosphere anomalies driven by the surface heat flux forcing propagate into the tropical Pacific mainly through thermodynamic ocean-atmosphere interactions, with ocean dynamics playing an important role in modifying the equatorial sea surface temperature (SST) response. The associated changes in the tropical Pacific mean state not only extend climate anomalies into the other hemisphere through atmospheric teleconnections, but also significantly affect the properties of ENSO. In particular, the ENSO-like TPDV affects the relative frequency of El Niño and La Niña. To investigate the causality and mechanism of this linkage, a separate set of climate model experiments is conducted by imposing surface heat flux anomalies associated with the ENSO-like TPDV in the tropical Pacific. The forced mean state change affects the frequency of El Niño and La Niña events by modulating the SST contrast between the tropical Pacific and the Indian/Atlantic Oceans and associated zonal wind anomalies in the western Pacific. This study presents in detail the atmospheric and oceanic mechanisms by which extratropical atmospheric forcing induces basin-wide coherent patterns of TPDV that can further affect ENSO characteristics, which has not been systematically studied in fully coupled climate models. The results also show that the tropical Pacific is more strongly influenced by the South Pacific through both thermodynamic processes and ocean dynamics. The strong oceanic linkage to the South Pacific allows delayed negative oceanic feedback to effectively affect the equatorial Pacific SST, which may be important for setting up the time scales of TPDV
UNESCO General History of Africa, Vol. I, Abridged Edition
Author: Jacqueline Ki-Zerbo
Publisher: Univ of California Press
ISBN: 9780520066960
Category : History
Languages : en
Pages : 372
Book Description
"This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
Publisher: Univ of California Press
ISBN: 9780520066960
Category : History
Languages : en
Pages : 372
Book Description
"This volume covers the period from the end of the Neolithic era to the beginning of the seventh century of our era. This lengthy period includes the civilization of Ancient Egypt, the history of Nubia, Ethiopia, North Africa and the Sahara, as well as of the other regions of the continent and its islands."--Publisher's description
The Forests of the Philippines
Author: Philippines. Bureau of Forestry
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 574
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 574
Book Description
Geological History of the Polar Oceans: Arctic versus Antarctic
Author: U. Bleil
Publisher: Springer Science & Business Media
ISBN: 9400920296
Category : Science
Languages : en
Pages : 811
Book Description
Proceedings of the NATO Advanced Research Workshop, Bremen, Germany, October 10-14, 1988
Publisher: Springer Science & Business Media
ISBN: 9400920296
Category : Science
Languages : en
Pages : 811
Book Description
Proceedings of the NATO Advanced Research Workshop, Bremen, Germany, October 10-14, 1988
OECD-FAO Agricultural Outlook 2013
Author: OECD
Publisher: OECD Publishing
ISBN: 9264194223
Category :
Languages : en
Pages : 326
Book Description
The nineteenth edition of the Agricultural Outlook, and the ninth prepared jointly with the Food and Agriculture Organization of the United Nations (FAO), provides projections to 2022 for the major agricultural commodities and biofuels as well as for fish and seafood.
Publisher: OECD Publishing
ISBN: 9264194223
Category :
Languages : en
Pages : 326
Book Description
The nineteenth edition of the Agricultural Outlook, and the ninth prepared jointly with the Food and Agriculture Organization of the United Nations (FAO), provides projections to 2022 for the major agricultural commodities and biofuels as well as for fish and seafood.
Earth's Glacial Record
Author: M. Deynoux
Publisher: Cambridge University Press
ISBN: 9780521548038
Category : Science
Languages : en
Pages : 292
Book Description
This book discusses glacial or glacially-controlled sequences as markers of the Earth's geodynamic and climatic history.
Publisher: Cambridge University Press
ISBN: 9780521548038
Category : Science
Languages : en
Pages : 292
Book Description
This book discusses glacial or glacially-controlled sequences as markers of the Earth's geodynamic and climatic history.
Structure and Development of the Greenland-Scotland Ridge
Author: Martin H. P. Bott
Publisher: Springer Science & Business Media
ISBN: 1461334853
Category : Science
Languages : en
Pages : 675
Book Description
A group of geoscientists from a number of NATO countries met under NATO sponsorship in Copenhagen on February 27 and 28, 1978, and formulated a proposal entitled "EVOLUTION OF THE GREENLAND ICELAND-FAEROE-SCOTLAND RIDGE, A KEY AREA IN MARINE GEOSCIENCE". This part of the North Atlantic Ocean is of particular interest because of its anomalously shallow bathymetry which has profoundly influenced many aspects of the evolution of the North Atlantic. The proposed investigations therefore aim to study the deep crustal structure including relationship of continental and oceanic crust, history of subsidence of the ridge including its past role as a land bridge, age of the oceanic basement along it and its history of formation, and the influence of the ridge on Tertiary and Quaternary depositional palaeoenvironments. In furtherance of this proposal, it is intended to carry out a series of seismic and drilling operations on the Ridge during the coming years. These major marine investigations will be mainly funded from national sources. An important preliminary stage to the project is the collec tion and synthesis of available data. NATO has already approved a small budget for this purpose which has enabled a geoscientist to work partly at the Department of Geological Sciences of Durham University, UK, and partly at Lamont-Doherty Geological Observatory of Columbia University, Palisades, USA, for about six months to compile the data. The most important map showing magnetic anomalies and lineations in the area, is included in a pocket at the back of this volume.
Publisher: Springer Science & Business Media
ISBN: 1461334853
Category : Science
Languages : en
Pages : 675
Book Description
A group of geoscientists from a number of NATO countries met under NATO sponsorship in Copenhagen on February 27 and 28, 1978, and formulated a proposal entitled "EVOLUTION OF THE GREENLAND ICELAND-FAEROE-SCOTLAND RIDGE, A KEY AREA IN MARINE GEOSCIENCE". This part of the North Atlantic Ocean is of particular interest because of its anomalously shallow bathymetry which has profoundly influenced many aspects of the evolution of the North Atlantic. The proposed investigations therefore aim to study the deep crustal structure including relationship of continental and oceanic crust, history of subsidence of the ridge including its past role as a land bridge, age of the oceanic basement along it and its history of formation, and the influence of the ridge on Tertiary and Quaternary depositional palaeoenvironments. In furtherance of this proposal, it is intended to carry out a series of seismic and drilling operations on the Ridge during the coming years. These major marine investigations will be mainly funded from national sources. An important preliminary stage to the project is the collec tion and synthesis of available data. NATO has already approved a small budget for this purpose which has enabled a geoscientist to work partly at the Department of Geological Sciences of Durham University, UK, and partly at Lamont-Doherty Geological Observatory of Columbia University, Palisades, USA, for about six months to compile the data. The most important map showing magnetic anomalies and lineations in the area, is included in a pocket at the back of this volume.
Mesozoic and Cenozoic Sequence Stratigraphy of European Basins
Author: Pierre Charles de Graciansky
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 818
Book Description
This project was designed to build a documented chronostratigraphic and outcrop record of depositional sequences calibrated across European basins. Data on standard stages, magnetostratigraphy, and geochronology integrated with high resolution biostratigraphy calibrate the stratigraphic position of depositional sequence boundaries. Higher order eustatic sequences show a significant increase in the number identified. A good portion of the European Mesozoic and Cenozoic succession is set in the sequence stratigraphic context with a stratigraphic record of its bonding surfaces.
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 818
Book Description
This project was designed to build a documented chronostratigraphic and outcrop record of depositional sequences calibrated across European basins. Data on standard stages, magnetostratigraphy, and geochronology integrated with high resolution biostratigraphy calibrate the stratigraphic position of depositional sequence boundaries. Higher order eustatic sequences show a significant increase in the number identified. A good portion of the European Mesozoic and Cenozoic succession is set in the sequence stratigraphic context with a stratigraphic record of its bonding surfaces.