Seismic study of the Agua de Pau volcano São Miguel, Ac̜ores

Cover of: Seismic study of the Agua de Pau volcano São Miguel, Ac̜ores |

Published by U.S. Dept. of the Interior, Geological Survey, [Books and Open-File Reports Section, distributor] in [Denver, Colo.?] .

Written in English

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Subjects:

  • Seismology -- Azores -- São Miguel Island.,
  • Volcanoes -- Azores -- São Miguel Island.

Edition Notes

Includes bibliographical references (p. 23-27).

Book details

Statementby P.B. Dawson ... [et al.] ; prepared on behalf of the Laboratório de Geociências e Tecnologia of the regional government of the Ac̜ores in cooperation with the Instituto Nacional de Meteorologia and Geofísica, Portugal.
SeriesOpen-file report -- 89-331., U.S. Geological Survey open-file report -- 89-331.
ContributionsDawson, Phillip B., Laboratório de Geociências e Technologia (Azores), Instituto Nacional de Meteorologia e Geofísica., Geological Survey (U.S.)
The Physical Object
FormatMicroform
Pagination1 microfiche
ID Numbers
Open LibraryOL15278908M

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Seismic Study of the Agua de Pau Volcano, Sao Miguel, Apores by P.B. Seismic study of the Agua de Pau volcano São Miguel, A. da Silva2, J. Evans1, and H.

lyer1 Open-File Report Prepared on behalf of the Laboratdrio de Geociencias e Tecnologia of the Regional Government of the Apores in cooperation with the Institute Nacional de Meterologia and Geofisica, PortugalAuthor: P.B.

Dawson, A.M. daSilva, J.R. Evans, H.M. Iyer. Get this from a library. Seismic study of the Agua de Pau volcano São Miguel, Ac̜ores. [Phillip B Dawson; Laboratório de Geociências e Technologia (Azores); Instituto Nacional de Meteorologia e Geofísica.; Geological Survey (U.S.);].

The Agua de Pau stratovolcano in central Sao Miguel Island contains an outer 4 x 7 km caldera formed ab, years ago and an inner x 3 km caldera that was created ab years ago.

Ac̜ores book younger caldera is partially filled by the Lagoa do Fogo caldera lake. Several post-caldera lava domes were emplaced on the northern and western flanks, but activity in the caldera did not.

Agua de Pau stratovolcano in central Sao Miguel Island contains an outer 4 x 7 km caldera formed ab to 45, years ago and an inner x 3 km caldera that was created ab years ago.

Background: The younger caldera is partially filled by the Lagoa do Fogo caldera lake. Six volcanic zones comprise São Miguel, the largest island in the Azores. All are Quaternary in age except the last, which is partly Pliocene.

From west to east the zones are (1) the trachyte stratovolcano of Sete Cidades, (2) a field of alkali-basalt cinder cones and lava flows with minor trachyte, (3) the trachyte stratovolcano of Agua de Pau, (4) a field of alkali-basalt cinder cones and Cited by: complex.

During the field campaign, we have enlarged our study to include 50 broad-band soundings on the adjacent Fogo (Água de Pau) volcano and Congro Fissural volcanic system. The Fogo-Congro region is subjected to seismic swarm activity and its relationship with the geoelectrical structure is being investigated.

Tryggvason E, Dibble R, Okada H () Água de Pau volcano/seismic crisis of Final report on the UNESCO/WOVO Volcanology mission to São Miguel, Azores, 2 to 8 August Relatório final da missão UNESCO/WOVO, CV-INIC, Universidade dos Açores.

Not published documents, 26 pp. The western part of São Miguel is formed by the two volcanoes Sete Cidades and Agua de Pau whose calderas are some 30 km apart.

Both volcanic systems of Sete Cidades and Agua de Pau have been active within the last 1, years and their calderas formed ab to 26, years ago, respectively [Moore, ].

Projects: Imaging and Characterization of the Furnas Caldera, Sao Miguel, Azores Islands New activities on Sao Miguel Island (Azores): 3-D imaging of the Furnas - Agua de Pau zone with broad-band.

Page 18 - Mainit in Pantabangan, of Sibul in San Miguel de Mayumo, and of Sibul in Norzagaray, occur in a right line running north and south, approximately parallel to the direction of the cordillera and to that followed by the outcropping of the beds of conglomerates, sandstones, slates, and limestones which constitute the said post-Tertiary formation of the center of Luzon.

Between April 4 and Ja temporary network including short-period and broad-band instruments, as well as three small-aperture seismic antennas, was deployed in São Miguel (Saccorotti et al., ) to expand and complete the permanent network operated by “Sistema de Vigilancia Sismologica dos Açores” (SIVISA).

During this period, our instruments recorded more than. Other central volcanoes in the Azores, for example, the neighboring Pico Alto volcano (Jeffery et al., ), Sete Cidades (Beier et al., ) and Furnas (Jeffery et al., ) on São Miguel.

Fogo volcano. 2 Fogo is the largest of the three central volcanoes on São Miguel and dominates the centre of the island (fig. With a complex morphology the volcano rises to almost m and a summit caldera has formed as a result of numerous collapses and explosions, the most recent occurring during the sub-plinian eruption of and the hydromagmatic explosive event of Cidades, Agua de Pau, and Furnas volcanoes, Sao Miguel, Azores 22 2.

Estimated volumes of different rock types on the three late Quaternary stratovolca-noes of Sao Miguel 25 IV Contents. Geology of Three Late Quaternary Stratovolcanoes on Sao Miguel, Azores By Richard B. Moore. Authorities in the Azores have alerted the population of São Miguel island for the ongoing recurrent seismic activity which they consider to be “above normal values.” Starting on Sunday shortly before midnight, the tremors continued throughout Monday with multiple recurrent seismic events recorded on the central area of the island.

The tremors lasted through the [ ]. Furnas volcano / VolcanoDiscovery. Last update: 22 Aug (seismic unrest in central Sao Miguel Island) Typical eruption style: Explosivos Erupciones del.

São Miguel, the largest island of the Azores, corresponds to one of the most seismically active areas within the archipelago. During historical times it was affected at least six times by destructive earthquakes, which were responsible for thousands of deaths.

Several seismic crises are related both to volcanic eruptions and unrest episodes, being the cause of significant damage over more. São Miguel island lies in the eastern part of the Terceira Rift. Here we present a geodetic study of the São Miguel Island focused on the three main active stratovolcanoes: Sete Cidades, Fogo (also called Água de Pau), and Furnas.

The oldest rocks of São Miguel. Volcanic hazard at Furnas is dealt with at length in other papers in this volume (Baxter et al., ; Cole et al., ; Guest et al., ) but briefly Furnas volcano is the most easterly of the three trachytic active central volcanoes on the island of São Miguel, (Zbyszewski,Booth et al.,Moore,Moore, a, Moore, b) the others are Sete Cidades and Fogo (also known.

São Miguel Island has three active strato-volcanoes, Sete Cidades, Fogo (Água de Pau) and Furnas. The red frame outlines the survey area of this work around the inner caldera at Furnas.

Modified from Guest et al. () and Wallenstein et al. OCLC Number: Notes: Relief shown by contours and spot heights. Description: 1 microfiche: negative. Cartographic Mathematical Data: Scale ,; (W 25°35ʹ--W 25°25ʹ/N 37°50ʹ.

The seismic monitoring site in question contributes to the monitoring of volcanic Água de Pau volcano and volcanic fissure system of the peaks that it is vital for maintaining equipment levels for monitoring the activity in recent months has developed in part central island of S.

Miguel. More than earthquakes were registered under dormant Furnas volcano on the island of Sao Miguel, the Azores on February 11 The last eruption of this volcano was in (VEI 5). It was one of the largest Holocene explosive eruptions in the Azores and caused significant damage and fatalities.

Água de Pau Volcano (Fogo Volcano), São Miguel, Azores, Portugal: The Água de Pau Volcano is a stratovolcanic complex, located in the central part of the island of São Miguel, in the Portuguese archipelago of the Azores.

It is located in Ribeira Grande, Lagoa. During the field campaign, we have enlarged our study to include 50 broad-band soundings on the adjacent Fogo (Água de Pau) volcano and Congro Fissural volcanic system.

The Fogo-Congro region is subjected to seismic swarm activity and its relationship with. The Azores (/ ə ˈ z ɔːr z / ə-ZORZ, also US: / ˈ eɪ z ɔːr z / AY-zorz; Portuguese: Açores [ɐˈsoɾɨʃ]), officially the Autonomous Region of the Azores (Região Autónoma dos Açores), is one of the two autonomous regions of Portugal (along with Madeira).It is an archipelago composed of nine volcanic islands in the Macaronesia region of the North Atlantic Ocean, about 1, km ( This place is situated in Lagoa, Acores, Acores, Portugal, its geographical coordinates are 37° 43' 0" North, 25° 31' 0" West and its original name (with diacritics) is Água de Pau.

See Agua de Pau photos and images from satellite below, explore the aerial photographs of Agua de Pau in Portugal. The Azores archipelago is located at the triple junction between the Eurasia, Nubia and North America lithospheric plates.

São Miguel Island, situated at the southeastern part of the western segment of the Azores–Gibraltar Fracture Zone, presents an east–west elongated shape, comprising three quiescent central volcanoes with summit calderas linked by zones of fissure volcanism.

occurred in São Miguel (Pacheco et al., ; Gaspar et al., a). Located in the central part of São Miguel, Fogo volcano (also known as Água de Pau volcano) is the largest of the three active central volcanoes of the island, reaching a maximum altitude of m above sea level.

The km. Another of the points of interest of the island is the Fogo Lagoon, which is located in the Serra de Agua de Pau, as well as the Congro Lagoon, located a few kilometers from Vila Franca do Campo. In the eastern part of the island, is the Pico da Vara - the highest elevation of the island.

Six volcanic zones comprise São Miguel, the largest island in the Azores. All are Quaternary in age except the last, which is partly Pliocene. From west to east the zones are (1) the trachyte stratovolcano of Sete Cidades, (2) a field of alkali-basalt cinder cones and lava flows with minor trachyte, (3) the trachyte stratovolcano of Agua de Pau, (4) a field of alkali-basalt cinder cones and.

Agua de Pau Volcano is located in the middle of Sao Miguel Island, Azores. Agua de Pau volcano occupies an area of about sq km. A x 3 km caldera for years ago and is filled by Lake Lagoa do Fogo (Fire Lake).

The crater walls are m high. The subaerial volume of the volcano is about 80 cubic km. Volcanoes and seismic centers of the Philippine Archipelago by Saderra Masó, Miguel. Publication date Topics Volcanoes, Earthquakes Google Book from the collections of Harvard University Language English.

Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb. Includes. In aroundPêro de Teive, established a small fishing village that eventually grew into the urban agglomeration in Santa Clara. Populated sincethe island of São Miguel was a vast territory, with small settlements scattered about, except for Vila Franca do Campo in the central-southern coast, and the smaller community of Ponta Delgada.

Villa Franca had for many years been the. Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published. Volcano Tours Our expert volcanologists and photographers offer unique travel experiences: volcano expeditions, photo tours, and relaxed walking & study tours.

São Miguel Island has an area of km 2 and is composed of three active trachytic central volcanoes with summit calderas, Sete Cidades (7C), Fogo (also known as Água de Pau) and Furnas, separated by two basaltic fissure systems, Picos and Congro.

So when normality returns, you’ll be able to explore the best bits of the Azores in Sao Miguel, from its hot springs to its quaint fishing villages – making for the ultimate comeback trip. Rayburn Covid Guarantee. Book with confidence with our Covid Guarantee, which provides unrivalled, extra flexible cancellation policies and even more.

Azores Islands, Portugal has had: (M or greater) 0 earthquakes in the past 24 hours 7 earthquakes in the past days. APP STORE - GOOGLE PLAY. Update UTC: The Azores islands are volcanic islands and so is Sao Miguel last years, 5 eruptions occurred at Sao Miguel.

For more detailed information about the volcanic activity of the Azores and Sao Miguel, please follow this Volcanohotspot link. Update UTC: detailed locations of the strongest earthquakes since the last.

High-resolution seismic investigation of the Medicine Lake Volcano, California. U.S. Geological Survey Open-File Report, p., [6] P. Dawson and D. Stauber. Data report for a three-dimensional high-resolution P-velocity structural investigation of Newberry Volcano, Oregon, using seismic tomography.

Agua De Pau Volcano, Portugal Lagoa do Fogo lake, seen here from the west, partially fills the younger of two Pleistocene calderas on Agua de Pau stratovolcano in central Sao Miguel Island. Several post-caldera lava domes were emplaced on the northern and western flanks of the volcano, but activity inside the caldera did not resume until the.Açores.

Água de Pau, ilha de S. Miguel, Açores, Setembro de ∎ Iº Meeting on “Realistic Evaluation of Temporal Interaction of Natural Hazards”.

Ponta Delgada, ilha de S. Miguel, Açores, Fevereiro, ∎ Workshop on “From seismograms to magma: what do seismograms actually tell us about a volcano?”.Seismic Study of the Agua de Pau Volcano, Sao Miguel, Acores (Azores) (United States Geological Survey Open-File Report OFR ).

Dawson, P. B.

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