Seismotectonics of the Canary Islands

Mézcua, J.; Buforn, E.; Udías, Agustín; Rueda, Juan

doi:10.1016/0040-1951(92)90440-h

Cited by 86 publications

(54 citation statements)

References 9 publications

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“…Regarding the kinematics of the archipelago, some moderate earthquakes have been registered in the Canary Islands region, which could be attributed to a diffuse tectonic activity , 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 e.g., the M5.2 1989 Tenerife-Gran Canaria earthquake (Mezcua et al, 1992) …”

Section: Geological and Volcanic Frameworkmentioning

confidence: 99%

An Overview of Geodetic Volcano Research in the Canary Islands

Fernández

González

Camacho

et al. 2014

Pure Appl. Geophys.

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Section: Geological and Volcanic Frameworkmentioning

confidence: 99%

An Overview of Geodetic Volcano Research in the Canary Islands

Fernández

González

Camacho

et al. 2014

Pure Appl. Geophys.

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“…The eastern islands of Lanzarote and Fuerteventura overlie a transitional crust, which at some time in the past was probably oceanic (Roeser et al, 1971), whereas the central and western islands of Gran Canaria, Tenerife, La Gomera, La Palma and El Hierro lie on oceanic crust (Rothe and Schminke, 1968). This crust is fractured by two main fault systems: a WNW-ESE oriented Atlantic system, and an ENE-WSW to NNE-SSW oriented system related to the Atlas Range (Mezcúa et al, 1991).…”

Section: The Geological Setting Of the Canary Islands And Basinmentioning

confidence: 99%

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Úrgeles¹,

Canals²,

Masson³

2001

Sci. Mar.

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SUMMARY: The morphological characterisation of the western submarine island flanks of El Hierro and La Palma differentiates four type-zones that may give new insights into the evolution of oceanic island slopes. The different type-zones result from the interplay between constructive volcanic processes, hemipelagic settling and volcano collapses. The latter results in massive debris avalanche deposits, which form large volcaniclastic aprons. In most cases, the headwall scarps are clearly exposed on the emerged part of the islands. The events that occurred in the youngest and westernmost islands of El Hierro and La Palma have vertical runouts exceeding 6,000 m and volumes that can reach several hundred km 3 . The landslide frequency for the entire Canaries is one major event per 90 ka. Triggering mechanisms are closely related to magmatic processes. The increase in the shear stress is directly linked with the forceful intrusion of magma along "ridge-rift" systems, while in the western Canary Islands it seems that the main process reducing shear resistance may be related to the rise in pore pressure due to hydrothermal circulation.

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“…These structures are: Santiago del Teide (NW-SE rift zone), Dorsal (ENE-WSW rift zone) and the Southern Volcanic Zone (Carracedo 1996). The main geohazards are mainly related to the volcanic activity of the island (the Teide-Pico Viejo complex has a permanent and active magmatic chamber), involving also a regional seismicity activity with magnitude lower than 5.0 (Mezcua et al 1992). The Island is characterized also by the presence of six large paleolandslides, whose age ranges from Upper Pliocene to Middle Pleistocene (H€ urlimann et al 2004).…”

Section: Tenerife Island Geological and Geomorphological Characterizamentioning

confidence: 99%

Fast detection of ground motions on vulnerable elements using Sentinel-1 InSAR data

Solari

Barra

Herrera

et al. 2017

Geomatics, Natural Hazards and Risk

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The detection of active movements that could threat the infrastructures and the population is one of the main priorities of the risk management chain. Interferometric Synthetic Aperture Radar (InSAR) techniques represent one of the most useful answers to this task; however, it is difficult to manage the huge amount of information derived from the interferometric analysis. In this work, we present a procedure for deriving impact assessment maps, over a regional test site, using as starting point Sentinel-1 SAR (Synthetic Aperture Radar) images and a catalogue of elements at risk that acts as a second input of the methodology. We applied the proposed approach, named as Vulnerable Elements Activity Maps (VEAM), to the islands of Gran Canaria, La Gomera and Tenerife (Spain), where we analysed SAR images covering the time interval November 2014-September 2016. The methodology, meant to be a powerful tool for reducing the time needed for a complete analysis of a full stack of InSAR data, is ideally suited for Civil Protection Authorities. The application of the methodology allowed to detect 108 areas affected by active deformation that are threatening one or more elements at risk in 25 municipalities of the three islands.

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Seismotectonics of the Canary Islands

Cited by 86 publications

References 9 publications

An Overview of Geodetic Volcano Research in the Canary Islands

An Overview of Geodetic Volcano Research in the Canary Islands

Flank stability and processes off the western Canary Islands: a review from El Hierro and La Palma

Fast detection of ground motions on vulnerable elements using Sentinel-1 InSAR data

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