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Active tectonics and first paleoseismological results in Faial,Picoand S.Jorge islands (Azores,Portugal)
Azores neotectonics active faulting paleoseismology seismic hazard
2015/9/16
The neotectonics of the islands of Faial, Pico and S. Jorge (Azores) is presented. Preliminary paleoseismology data from trench exposures across three active fault zones (Lomba do Meio, Lagoa do Capit...
Monitoring of fumarole discharge and CO2 soil degassing in the Azores: contribution to volcanic surveillance and public health risk assessment
volcanology geochemistry soil degassing monitoring risk
2015/9/10
Fluid geochemistry monitoring in the Azores involves the regular sampling and analysis of gas discharges from
fumaroles and measurements of CO2 diffuse soil gas emissions. Main degassing areas under ...
Reassessment of the historical seismic activity with major impact on S. Miguel Island (Azores)
the historical seismic activity major impact S. Miguel Island
2009/12/10
On account of its tectonic setting, both seismic and volcanic events are frequent in the Azores archipelago. During the historical period earthquakes and seismic swarms of tectonic and/or volcanic ori...
Landslides density map of S. Miguel Island, Azores archipelago
Landslides density map S. Miguel Island, Azores archipelago
2009/12/9
The Azores archipelago is located in the Atlantic Ocean and is composed of nine volcanic islands. S. Miguel, the largest one, is formed by three active, E-W trending, trachytic central volcanoes with ...
Early Pliocene heteropods and pteropods (Mollusca,Gastropoda) from SantaMaria Island (Azores,Portugal):systematics and biostratigraphic implications
Mollusca Heteropoda Pteropoda Pliocene Biostratigraphy Azores Northern Atlantic
2009/10/20
Aholoplanktonic mollusc assemblage from Neogene sediments of theAzorean island SantaMaria is described and analysed to determine the age of the sediments. Sixteen taxa are documented (three heteropods...
Novocrania turbinata (Brachiopoda) from the Early Pliocene of the Azores (Portugal)
Craniiform brachiopod Pliocene Azores Northern Atlantic Ocean Spatial Range Extension
2009/10/20
Novocrania turbinata (POLI, 1795) is documented from the Early Pliocene strata of SantaMaria Island (Azores,Portugal), extending the range of this species to the central Northern Atlantic Ocean. This ...
Fine and Microstructure Observations on a Hydrographic Section from the Azores to the Flemish Cap
conductivity-temperature-depth Flemish Cap Hydrographic Section
2009/2/5
Continuous conductivity-temperature-depth-dissolved-oxygen (CTD) data are used to investigate the spatial distribution of fine and microstructure between the Azores and Flemish Cap. The CTD data are u...
Numerical Modeling of Meander and Eddy Formation in the Azores Current Frontal Zone
Eddy Formation Azores Current Frontal Zone
2009/1/7
Numerical experiments with an 11-level primitive equation, finite-difference model in a periodic channel are performed to analyze the properties of unstable finite-amplitude disturbances in an idealiz...
Double Diffusion and the Distribution of the Density Ratio in the Mediterranean Waterfront Southeast of the Azores
Mediterranean Water Temperture salinity
2009/1/6
Temperture and salinity (T–S) finestructure on vertical scales of 10 db and larger is examined in a 500 by 500 km grid located southeast of the Azores in the North Atlantic. The convergence of several...
New light is shed on Worthington's concept of the North Atlantic circulation, postulating the existence of two anticyclonic gyres. This concept, which seems to have been laid to rest in the last decad...
Isopycnal EOFs in the Azores Current Region: A Statistical Tool forDynamical Analysis and Data Assimilation
empirical orthogonal functions sea level anomaly Azores Current Azores Front
2008/12/3
An empirical orthogonal function analysis of the vertical space–time variability of the thermohaline structure of the ocean in summer and fall 1993 in the Azores Current region has been performed. The...
Isopycnal EOFs in the Azores Current Region: A Statistical Tool forDynamical Analysis and Data Assimilation
empirical orthogonal functions sea level anomaly Azores Current
2008/11/26
An empirical orthogonal function analysis of the vertical space–time variability of the thermohaline structure of the ocean in summer and fall 1993 in the Azores Current region has been performed. The...
Instability Dynamics of a Subtropical Jet and Applications to the Azores Front Current System: Eddy-Driven Mean Flow
Instability Dynamics Subtropical Jet Current System Eddy-Driven Mean Flow
2008/7/10
The Azores front is associated with an eastward flowing subtropical jet, which coincides with the northern edge of the North Atlantic subtropical gyre and forms a southern branch of the Gulf Stream. A...
Formation of an Azores Current Due to Mediterranean Overflow in a Modeling Study of the North Atlantic
an Azores Current Mediterranean Overflow North Atlantic
2008/7/3
A mechanism for the formation of the Azores Current is proposed. On the basis of observations and model results, it is argued that the primary cause of the Azores Current is the water mass transformat...
Seismic vulnerability of dwellings at Sete Cidades Volcano (S. Miguel Island,Azores)
Seismic vulnerability dwellings Sete Cidades Volcano
2009/12/29
Since the settlement of S. Miguel Island (Azores), in the XV century, several earthquakes caused important human losses and severe damages on the island. Sete Cidades Volcano area, located in the west...