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Journal articles on the topic 'São Miguel (Azores)'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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1

Cole, P. D., G. Queiroz, N. Wallenstein, J. L. Gaspar, A. M. Duncan, and J. E. Guest. "An historic subplinian/phreatomagmatic eruption: the 1630 AD eruption of Furnas volcano, Sa˜o Miguel, Azores." Journal of Volcanology and Geothermal Research 69, no. 1-2 (December 1995): 117–35. http://dx.doi.org/10.1016/0377-0273(95)00033-x.

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2

Zandomeneghi, Daria, Javier Almendros, Jesús M. Ibáñez, and Gilberto Saccorotti. "Seismic tomography of Central São Miguel, Azores." Physics of the Earth and Planetary Interiors 167, no. 1-2 (March 2008): 8–18. http://dx.doi.org/10.1016/j.pepi.2008.02.005.

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3

Wallenstein, Nicolau, Angus Duncan, David Chester, and Rui Marques. "Fogo Volcano (São Miguel, Azores): a hazardous edifice." Géomorphologie : relief, processus, environnement 13, no. 3 (October 1, 2007): 259–70. http://dx.doi.org/10.4000/geomorphologie.2853.

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4

Guest, J. E., J. L. Gaspar, P. D. Cole, G. Queiroz, A. M. Duncan, N. Wallenstein, T. Ferreira, and J. M. Pacheco. "Volcanic geology of Furnas Volcano, São Miguel, Azores." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 1–29. http://dx.doi.org/10.1016/s0377-0273(99)00064-5.

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5

Duncan, A. M., G. Queiroz, J. E. Guest, P. D. Cole, N. Wallenstein, and J. M. Pacheco. "The Povoação Ignimbrite, Furnas Volcano, São Miguel, Azores." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 55–65. http://dx.doi.org/10.1016/s0377-0273(99)00067-0.

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6

Ponta, Delgada, and Miguel San. "OCTOBER 9–11, 2007—San Miguel Island, Azores." Endocrinology 148, no. 5 (May 1, 2007): 2334. http://dx.doi.org/10.1210/endo.148.5.9999.

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7

Barbosa & Guimarães, Arquitectos. "Piscinas municipales de Povoaçao en Sao Miguel, Azores. Portugal." EN BLANCO. Revista de Arquitectura 4, no. 8 (November 29, 2016): 96. http://dx.doi.org/10.4995/eb.2012.6904.

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<p>El pueblo de Povoação se sitúa en el Archipiélago de las Azores, en el extremo sur de la isla de San Miguel. Protegido del mar por la pendiente, el edifi cio va a ocupar una parcela formada por una plataforma llana y rectangular ya preparada y empleada por el Consejo Municipal para desempeñar actividades deportivas al exterior. Esta plataforma fue realizada sacrificando la pendiente, por la imposición de un corte que distorsionó su volumen natural.</p>

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8

Notcutt, Geoff, and Frances Davies. "Biomonitoring of volcanogenic fluoride, Furnas Caldera, São Miguel, Azores." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 209–14. http://dx.doi.org/10.1016/s0377-0273(99)00077-3.

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9

Valadão, P., J. L. Gaspar, G. Queiroz, and T. Ferreira. "Landslides density map of S. Miguel Island, Azores archipelago." Natural Hazards and Earth System Sciences 2, no. 1/2 (June 30, 2002): 51–56. http://dx.doi.org/10.5194/nhess-2-51-2002.

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Abstract. 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 caldera (Sete Cidades, Fogo and Furnas). Chains of basaltic cinder cones link those major volcanic structures. An inactive trachytic central volcano (Povoação) and an old basaltic volcanic complex (Nordeste) comprise the easternmost part of the island. Since the settlement of the island early in the 15th century, several destructive landslides triggered by catastrophic rainfall episodes, earthquakes and volcanic eruptions occurred in different areas of S. Miguel. One unique event killed thousands of people in 1522. Houses and bridges were destroyed, roads were cut, communications, water and energy supply systems became frequently disrupted and areas of fertile land were often buried by mud. Based on (1) historical documents, (2) aerial photographs and (3) field observations, landslide sites were plotted on a topographic map, in order to establish a landslide density map for the island. Data obtained showed that landslide hazard is higher on (1) the main central volcanoes where the thickness of unconsolidated pyroclastic deposits is considerable high and (2) the old basaltic volcanic complex, marked by deep gullies developed on thick sequences of lava flows. In these areas, caldera walls, fault scarps, steep valley margins and sea cliffs are potentially hazardous.

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10

Moore, Richard B. "Volcanic geology and eruption frequency, S�o Miguel, Azores." Bulletin of Volcanology 52, no. 8 (November 1990): 602–14. http://dx.doi.org/10.1007/bf00301211.

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11

Elliott, Tim, Janne Blichert-Toft, Arnd Heumann, Govert Koetsier, and Victor Forjaz. "The origin of enriched mantle beneath São Miguel, Azores." Geochimica et Cosmochimica Acta 71, no. 1 (January 2007): 219–40. http://dx.doi.org/10.1016/j.gca.2006.07.043.

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12

BORGES, PAULO A. V., ANA S. B. RODRIGUES, SARA E. SILVA, SOFIA G. SEABRA, OCTÁVIO S. PAULO, and JOSÉ A. QUARTAU. "New data on polymorphism of the meadow spittlebug Philaenus spumarius (L.) (Hemiptera: Aphrophoridae) from the island of São Miguel (Azores)." Zootaxa 4369, no. 1 (January 2, 2018): 144. http://dx.doi.org/10.11646/zootaxa.4369.1.9.

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The meadow spittlebug, Philaenus spumarius (L.) (Hemiptera, Aphrophoridae) is a widespread insect species in the Holarctic region, exhibiting a dorsal colour balanced polymorphism. In the Azores the species is known from high elevations in Terceira and São Miguel islands. A sample of 235 individuals from Pico da Vara and Graminhais protected areas (São Miguel, Azores) (between 645 and 935 m a.s.l.), collected in 2000 and 2017, showed a remarkable high frequency of the melanic morphs flavicollis (FLA) and quadrimaculatus (QUA). In addition, a high frequency of melanics was observed in males. We explore the hypotheses for the origin of Azorean colonization and for the high proportion of melanism in the Azorean populations.

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13

Haggar, J. P., A. R. Westgarth-Smith, and D. Penman. "Threatened flora and forest in the Azores." Oryx 23, no. 3 (July 1989): 155–60. http://dx.doi.org/10.1017/s0030605300022882.

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The authors visited the Azores in September 1986 to investigate the status of the archipelago's natural forests and the rare endemic trees they contain. They carried out intensive investigation only on the island of Pico, although they also worked on Terceira and Sao Miguel. These three are the only islands on which moderately large areas of forest are believed to remain.

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14

Montesinos, F. G., A. G. Camacho, and R. Vieira. "Analysis of gravimetric anomalies in Furnas caldera (São Miguel, Azores)." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 67–81. http://dx.doi.org/10.1016/s0377-0273(99)00068-2.

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15

Nunes, Olga C., M. Manuel Donato, and Milton S. Da Costa. "Isolation and Characterization of Rhodothermus Strains from S. Miguel, Azores." Systematic and Applied Microbiology 15, no. 1 (February 1992): 92–97. http://dx.doi.org/10.1016/s0723-2020(11)80144-x.

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16

Louvat, Pascale, and Claude Jean Allègre. "Riverine erosion rates on Sao Miguel volcanic island, Azores archipelago." Chemical Geology 148, no. 3-4 (June 1998): 177–200. http://dx.doi.org/10.1016/s0009-2541(98)00028-x.

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17

Santos, Maria da Conceição Raimundo, Dina Maria Medeiros Pacheco, Fernando Santana, and Helena Muelle. "Cyanobacteria blooms in Sete-Cidades lake (S. Miguel Island - Azores)." Algological Studies/Archiv für Hydrobiologie, Supplement Volumes 117 (October 1, 2005): 393–406. http://dx.doi.org/10.1127/1864-1318/2005/0117-0393.

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18

Vieira, Maria Antónia, Mafalda Sampayo, and Paulo Miranda. "Measures and Model of the Churches of São Miguel (Azores)." IOP Conference Series: Materials Science and Engineering 960 (December 10, 2020): 032087. http://dx.doi.org/10.1088/1757-899x/960/3/032087.

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19

Johnson, Catherine L., Jan R. Wijbrans, Catherine G. Constable, Jeff Gee, Hubert Staudigel, Lisa Tauxe, Victor-H. Forjaz, and Mário Salgueiro. "40Ar/39Ar ages and paleomagnetism of São Miguel lavas, Azores." Earth and Planetary Science Letters 160, no. 3-4 (August 1998): 637–49. http://dx.doi.org/10.1016/s0012-821x(98)00117-4.

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20

BEIER, CHRISTOPH, KARSTEN M. HAASE, and THOR H. HANSTEEN. "Magma Evolution of the Sete Cidades Volcano, São Miguel, Azores." Journal of Petrology 47, no. 7 (March 29, 2006): 1375–411. http://dx.doi.org/10.1093/petrology/egl014.

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21

de Oliveira, A. Lopes, M. J. Goncalves, and L. G. Sobrinho. "Endemic goitre in the island of S. Miguel (the Azores)." Acta Endocrinologica 111, no. 2 (February 1986): 200–203. http://dx.doi.org/10.1530/acta.0.1110200.

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Abstract. A survey of endemic goitre in the island of S. Miguel (the Azores) was performed. The prevalence of goitre in school-children varied between 11 and 41%. In the most affected region, 16% of the adult males and 48% of the women had goitre, in some cases grade 3. The median urinary excretion of iodine was very low in school-children, varying between 10 and 49 μg I/g creatinine. The reasons for such a low iodine intake in the population of this oceanic island are the scarcity of fish in the diet and, possibly, the leaching of the soil of its iodine content due to high pluviosity.

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22

Albergaria, Rita, Filipa Pimenta, João Maroco, Isabel Leal, Teresa Albergaria, and Maria José Bicudo. "BINGE EATING IN OBESITY: MAINLAND PORTUGAL AND SÃO MIGUEL, AZORES." Psicologia, Saúde & Doença 18, no. 3 (November 30, 2017): 699–711. http://dx.doi.org/10.15309/17psd180306.

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23

Wallenstein, N., D. Chester, R. Coutinho, A. Duncan, and C. Dibben. "Chapter 16 Volcanic hazard vulnerability on São Miguel Island, Azores." Geological Society, London, Memoirs 44, no. 1 (2015): 213–25. http://dx.doi.org/10.1144/m44.16.

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24

Coutinho, R., J. Fontiela, P. Freire, and J. V. Cruz. "Chapter 21 Hydrogeology of São Miguel Island, Azores: a review." Geological Society, London, Memoirs 44, no. 1 (2015): 289–96. http://dx.doi.org/10.1144/m44.21.

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25

Carmo, R., J. Madeira, T. Ferreira, G. Queiroz, and A. Hipólito. "Chapter 6 Volcano-tectonic structures of São Miguel Island, Azores." Geological Society, London, Memoirs 44, no. 1 (2015): 65–86. http://dx.doi.org/10.1144/m44.6.

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26

Wallenstein, N., A. Duncan, J. E. Guest, and M. H. Almeida. "Chapter 8 Eruptive history of Fogo Volcano, São Miguel, Azores." Geological Society, London, Memoirs 44, no. 1 (2015): 105–23. http://dx.doi.org/10.1144/m44.8.

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27

Branco, Claudia C., and Luisa Mota-Vieira. "Population Structure of Sao Miguel Island, Azores: A Surname Study." Human Biology 75, no. 6 (2003): 929–39. http://dx.doi.org/10.1353/hub.2004.0002.

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28

Ambrosio, Vitor. "Religious tourism and the Lent pilgrimages in Sao Miguel, Azores." International Journal of Business and Globalisation 7, no. 1 (2011): 14. http://dx.doi.org/10.1504/ijbg.2011.040843.

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29

BELLAN-SANTINI, Denise, Joao Carlos Marques, and M. Fatima Rosa Lopes. "The Benthic Amphipod Fauna of the Azores (Portugal): an Up-To-Date Annotated List of Species, and Some Biogeographic Considerations." Crustaceana 65, no. 2 (1993): 204–17. http://dx.doi.org/10.1163/156854093x00568.

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AbstractThe Azores archipelago, located in the middle north Atlantic region, is biogeographically very interesting. With regard to the benthic amphipod fauna there are only few studies that concern the Azores, although species inventory and distributional ecology are relatively well known for the Portuguese continental coast (0 to 700 m). Actually, the knowledge of benthic amphipods from the Azores is limited to the results of two oceanographical expeditions, that took place in the first half of this century, and to data provided by some relatively recent papers and several other sporadic references. Moreover, this knowledge is mainly or exclusively taxonomic. Benthic amphipod dispersal capability is small compared to that of molluscs, decapods or fishes. They have direct development and a reduced swimming capability, and their migrations, both nictemeral and horizontal, cannot compensate these features. This limited dispersal capability determines a clear endemic tendency, and a reduced probability of global fauna mixtures. Therefore, amphipods constitute a fine biological material for biogeographic studies. In order to provide a tool for biogeographical comparisons, the available data on the Azores amphipod fauna were compiled. A review of the available literature and the study of several collections from the Azores, sampled during 1988 and 1989 at the islands of S. Miguel and Faial, provided a list of 122 species from 29 families. Thirty species were identified from the study of the S. Miguel and Faial collections, of which 15 (50%) are new records for the Azores, which emphasizes the existing lack of knowledge. One Ampithoe species might be new, and will be further studied, although it will be necessary to collect more specimens. Additionally, some available ecological data for each species arc given in the present paper.

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30

Di Chiara, Anita, Lisa Tauxe, and Fabio Speranza. "Paleointensity determination from São Miguel (Azores Archipelago) over the last 3ka." Physics of the Earth and Planetary Interiors 234 (September 2014): 1–13. http://dx.doi.org/10.1016/j.pepi.2014.06.008.

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31

Andersson, Tommy, Otto Hermelin, Alasdair Skelton, and Martin Jakobsson. "Bottom characterization of Lagoa das Furnas on São Miguel, Azores archipelago." Journal of Volcanology and Geothermal Research 321 (July 2016): 196–207. http://dx.doi.org/10.1016/j.jvolgeores.2016.02.031.

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32

Camacho, A. G., F. G. Montesinos, and R. Vieira. "A three-dimensional gravity inversion applied to São Miguel Island (Azores)." Journal of Geophysical Research: Solid Earth 102, B4 (April 10, 1997): 7717–30. http://dx.doi.org/10.1029/96jb03667.

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33

Tolstikhin, I. N., I. L. Kamenskiy, V. Forjaz, B. G. Polyak, V. I. Kononov, and D. I. Kudryavtsev. "HELIUM ISOTOPES IN GASES OF SÃO MIGUEL ISLAND, THE AZORES PLATEAU." International Geology Review 33, no. 9 (September 1991): 930–40. http://dx.doi.org/10.1080/00206819109465735.

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34

Menezes, Paulo T. L., Jandyr M. Travassos, Adriano J. A. Marçal, and Fernando A. Monteiro Santos. "3D magnetotelluric exploration of Sete Cidades Volcano, São Miguel Island, Azores." Interpretation 5, no. 2 (May 31, 2017): T219—T230. http://dx.doi.org/10.1190/int-2016-0018.1.

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Geothermal energy accounts for 43% of the electricity expenditure of São Miguel Island, Azores Archipelago. All production comes from the Ribeira Grande (RG) high-enthalpy geothermal field. To meet the growing energy demand in the island, it is necessary to extend the exploration efforts to new areas. We evaluated the results of a broadband magnetotelluric reconnaissance survey conducted at Sete Cidades Volcano, placed only 30 km westward of the RG field. The resistivity structure of the Sete Cidades geothermal system was obtained through a simultaneous 3D inversion of the full impedance tensor and tipper. The bathymetry and the topography of the island were treated as fixed features in the model. The geothermal reservoir at Sete Cidades is outlined as a northwest–southeast elongated resistive anomaly, geologically controlled by the Terceira Rift fracture zone. We have also identified high-conductivity zones between 1000 and 4000 m below mean sea level, probably associated with clay cap rocks overlying the geothermal reservoir.

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35

Gaspar, João, John E. Guest, Angus Duncan, David Chester, and Fernando Barriga. "Chapter 1 Volcanic geology of São Miguel Island (Azores Archipelago): introduction." Geological Society, London, Memoirs 44, no. 1 (2015): 1–3. http://dx.doi.org/10.1144/m44.1.

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36

Guest, J. E., J. M. Pacheco, P. D. Cole, A. M. Duncan, N. Wallenstein, G. Queiroz, J. L. Gaspar, and T. Ferreira. "Chapter 9 The volcanic history of Furnas Volcano, São Miguel, Azores." Geological Society, London, Memoirs 44, no. 1 (2015): 125–34. http://dx.doi.org/10.1144/m44.9.

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37

Micael, J., J. M. N. Azevedo, and A. C. Costa. "Biological characterisation of a subtidal tunnel in São Miguel island (Azores)." Biodiversity and Conservation 15, no. 11 (October 2006): 3675–84. http://dx.doi.org/10.1007/s10531-005-1537-2.

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38

Cerqueira, Ângela, Cristiana Costa, Denise Terroso, Cristina Sequeira, and Fernando Rocha. "Assessment of clayey materials from Santa Maria (Azores, Portugal) for preparation of peloids." Clay Minerals 54, no. 3 (August 1, 2019): 299–307. http://dx.doi.org/10.1180/clm.2019.38.

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AbstractThere is growing interest in the use of natural materials as alternatives to medicinal products composed of chemicals. For this reason, it is important to study materials which fill this need (e.g. the formulation of peloids). Historically, the Azores archipelago has long been visited for its mud baths, mainly on São Miguel Island, where volcanic muds demonstrate beneficial properties. The volcanic muds are scarce, however. Thus, residual clay materials of Santa Maria Island were studied to assess their suitability for the formulation of peloids. The results of tests from 20 samples, collected from all over the island, presented evidence that they are very favourable for peloid formulations, due to their mineralogical, chemical and technological properties. The materials showed good potential for blending with the São Miguel volcanic muds. The deposits studied show extensive outcrops.

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39

Vieira, V., B. Pintureau, J. Tavares, and J. N. McNeil. "Differentiation and gene flow among island and mainland populations of the true armyworm, Pseudaletia unipuncta (Haworth) (Lepidoptera: Noctuidae)." Canadian Journal of Zoology 81, no. 8 (August 1, 2003): 1367–77. http://dx.doi.org/10.1139/z03-115.

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The genetic structure of populations of the true armyworm, Pseudaletia unipuncta (Haworth) (Lepidoptera: Noctuidae), in the Azores archipelago was studied using polyacrylamide-gel electrophoresis. Four enzyme systems (aldehyde oxidase, esterase, phosphoglucomutase, and phosphoglucose isomerase) were examined in six populations from islands in the Azores (Santa Maria, São Miguel, Terceira, Pico, Faial, Flores) and compared with those from populations from mainland Portugal and Canada. The North American and European populations are not clearly separated from the Azorean ones. Similarly, studies of different enzyme systems (aldehyde oxidase, esterase, malic enzyme, sorbitol dehydrogenase, manose-6-phosphate isomerase, and phosphoglucomutase) over 2 years (1997 and 1998) at different times of the year (spring, summer, and autumn) and at three different altitudes (0, 250, and 500 m above sea level) on three different islands (Santa Maria, São Miguel, and Faial) uncovered no distinct differences. These results, obtained from classically used loci, suggest that there is still some gene flow between sites or that island populations have not been isolated for sufficient time to have diverged from founder populations.

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40

Caniaux, Guy. "Statistical analysis of the volcanic eruption frequency in the azores islands : a contribution to risk assessment." Bulletin de la Société Géologique de France 176, no. 1 (January 1, 2005): 107–20. http://dx.doi.org/10.2113/176.1.107.

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Abstract The datations of the last eruptive events which have occurred on 13 active volcanic complexes of the Azores are presented. By supposing that these events follow a statistical Poisson distribution, we estimate the occurrence period of these events, as well as the eruption probabilities for the next 300 years. Pico Mountain, Região dos Picos (São Miguel Island), the stratovolcano of Sete Cidades (São Miguel Island), the linear volcanic complexes of São Roque – Piedade (Pico Island) and of Capelo (Faial Island) must be considered as the most active volcanoes of the archipelago. The eruption styles of next eruptions are also specified.

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41

Silveira, D., J. L. Gaspar, T. Ferreira, and G. Queiroz. "Reassessment of the historical seismic activity with major impact on S. Miguel Island (Azores)." Natural Hazards and Earth System Sciences 3, no. 6 (December 31, 2003): 615–23. http://dx.doi.org/10.5194/nhess-3-615-2003.

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Abstract. 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 origin have struck S. Miguel Island causing a significant number of casualties and severe damages. The information present in historical records made possible a new macroseismic analysis of these major events using the European Macroseismic Scale-1998 (EMS-98). Among the strongest earthquakes of tectonic origin that affected S. Miguel Island, six events were selected for this study. The isoseismal maps drawn for these events enabled the identification of areas characterized by anomalous values of seismic intensity, either positive or negative, to constrain epicentre locations and to identify some new seismogenic areas. Regarding seismic activity associated with volcanic phenomena six cases were also selected. For each of the studied cases cumulative intensity values were assessed for each locality. The distribution of local intensity values shows that the effects are not homogeneous within a certain distance from the eruptive centre, the area of major impacts relates with the eruptive style and damages equivalent to high intensities may occur in Furnas and Sete Cidades calderas. Combining all the historical macroseismic data, a maximum intensity map was produced for S. Miguel Island.

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42

RANDO, J. C., H. PIEPER, STORRS L. OLSON, F. PEREIRA, and J. A. ALCOVER. "A new extinct species of large bullfinch (Aves: Fringillidae: Pyrrhula) from Graciosa Island (Azores, North Atlantic Ocean)." Zootaxa 4282, no. 3 (June 27, 2017): 567. http://dx.doi.org/10.11646/zootaxa.4282.3.9.

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A new species of extinct bullfinch, Pyrrhula crassa n. sp., is described from bones found in Furna do Calcinhas, a small cave situated at Caldeira, a volcano located in the southeastern portion of the Graciosa Island (Azores archipelago, North Atlantic Ocean). It is the first extinct passerine bird to be described from this archipelago. Both skull and post-cranial bones are larger in the new species than in its relatives, the Eurasian Bullfinch (P. pyrrhula) and the Azores Bullfinch or “Priolo” from São Miguel Island (P. murina), the new species being the largest known in this genus. The morphology of its humerus and the estimated wing length and surface area seem to indicate a flying ability similar to that of the extant P. murina. The possible sources of colonization of the genus into Azores, causes and chronology of extinction of the new species are discussed

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43

Rosa Nunes, José Manuel. "Economic and environmental impact of geothermal production electricity in Sao Miguel, Azores." Renewable Energy and Power Quality Journal 1, no. 07 (April 2009): 78–82. http://dx.doi.org/10.24084/repqj07.250.

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44

Gomes, A., J. L. Gaspar, C. Goulart, and G. Queiroz. "Evaluation of landslide susceptibility of Sete Cidades Volcano (S. Miguel Island, Azores)." Natural Hazards and Earth System Sciences 5, no. 2 (March 1, 2005): 251–57. http://dx.doi.org/10.5194/nhess-5-251-2005.

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Abstract. Sete Cidades is an active central volcano with a summit caldera located in the westernmost part of S. Miguel Island (Azores). Since the settlement of the Island, in the 15th century, many landslide events occurred in this volcano, causing extensive damages in buildings and infrastructures. The study of historical records and the observation of new occurrences showed that landslides in the region have been triggered by heavy rainfall periods, earthquakes and erosion. In order to assess landslide susceptibility at Sete Cidades Volcano, landslide scars and associated deposits were mapped through aerial photographs and field surveys. The obtained data were inserted in a GIS to produce a landslide distribution map. It was concluded that the high density landslide areas are related with (1) major scarp faults, (2) the margin of fluvial channels, (3) the sea cliffs and (4) volcanic landforms, namely the caldera wall. About 73% of the mapped events took place in areas where pyroclastic deposits are the dominant lithology and more than 77% occurred where slopes are equal or higher than 20°. These two parameters were integrated and used to generate a preliminary susceptibility map. The incorporation of vulnerability data into the GIS allowed concluding that 30% of dwellings and most of the roads on Sete Cidades Volcano are located in areas where landslide susceptibility is high to very high. Such conclusion should be taken into account for emergency and land use planning.

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45

Gomes, A., J. L. Gaspar, and G. Queiroz. "Seismic vulnerability of dwellings at Sete Cidades Volcano (S. Miguel Island, Azores)." Natural Hazards and Earth System Sciences 6, no. 1 (January 10, 2006): 41–48. http://dx.doi.org/10.5194/nhess-6-41-2006.

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Abstract. 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 westernmost part of the island, was attained by strong seismic crises of tectonic and volcanic origin and major events reached a maximum historical intensity of IX (European Macroseismic Scale 1998) in this zone. Aiming to evaluate the impact of a future major earthquakes, a field survey was carried out in ten parishes of Ponta Delgada County, located on the flanks of Sete Cidades volcano and inside it is caldera. A total of 7019 buildings were identified, being 4351 recognized as dwellings. The total number of inhabitants in the studied area is 11429. In this work, dwellings were classified according to their vulnerability to earthquakes (Classes A to F), using the structure types table of the EMS-98, adapted to the types of constructions made in the Azores. It was concluded that 76% (3306) of the houses belong to Class A, and 17% (740) to Class B, which are the classes of higher vulnerability. If the area is affected by a seismic event with intensity IX it is estimated, that 57% (2480) to 77% (3350) of the dwellings will partially or totally collapse and 15% (652) to 25% (1088) will need to be rehabilitated. In this scenario, considering the average of inhabitants per house for each parish, 82% (9372) to 92% (10515) of the population will be affected. The number of deaths, injured and dislodged people will pose severe problems to the civil protection authorities and will cause social and economic disruption in the entire archipelago.

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Cole, P. D., J. E. Guest, G. Queiroz, N. Wallenstein, J. M. Pacheco, J. L. Gaspar, T. Ferreira, and A. M. Duncan. "Styles of volcanism and volcanic hazards on Furnas volcano, São Miguel, Azores." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 39–53. http://dx.doi.org/10.1016/s0377-0273(99)00066-9.

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Dibben, Christopher, and David K. Chester. "Human vulnerability in volcanic environments: the case of Furnas, São Miguel, Azores." Journal of Volcanology and Geothermal Research 92, no. 1-2 (September 1999): 133–50. http://dx.doi.org/10.1016/s0377-0273(99)00072-4.

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Moore, Richard B., and Meyer Rubin. "Radiocarbon Dates for Lava Flows and Pyroclastic Deposits on São Miguel, Azores." Radiocarbon 33, no. 1 (1991): 151–64. http://dx.doi.org/10.1017/s0033822200013278.

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We report 63 new radiocarbon analyses of samples from São Miguel, the largest (ca 62 × 13km) and most populous (ca 150,000 inhabitants) island in the Azores archipelago (Fig 1). The samples are mainly carbonized tree roots and other plant material collected from beneath 20 mafic lava flows and spatter deposits and from within and beneath 42 trachytic pyroclastic flow, pyroclastic surge, mudflow, pumice-fall, and lacustrine deposits and lava flows. One calcite date is reported. The samples were collected during geologic mapping of the entire island (Moore, in press A; sample locations are shown on this map). Nine 1:25,000-scale topographic maps, published in 1983 by the Portuguese Army Cartographic Service, cover the island; samples and locations described below refer to these named sheets.

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Weiß, B. J., C. Hübscher, and T. Lüdmann. "The tectonic evolution of the southeastern Terceira Rift/São Miguel region (Azores)." Tectonophysics 654 (July 2015): 75–95. http://dx.doi.org/10.1016/j.tecto.2015.04.018.

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Weiß, B. J., C. Hübscher, D. Wolf, and T. Lüdmann. "Submarine explosive volcanism in the southeastern Terceira Rift/São Miguel region (Azores)." Journal of Volcanology and Geothermal Research 303 (September 2015): 79–91. http://dx.doi.org/10.1016/j.jvolgeores.2015.07.028.

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