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1998 Azores Islands Earthquake
The 1998 Azores Islands earthquake (also known as the Faial earthquake) struck with an epicenter in the Atlantic Ocean, off the Azores Islands of Portugal at 05:19 local time. The shallow ( deep) mainshock, which measured 6.1 on the moment magnitude scale caused significant damage on the island of Faial and Corvo. At least 10 people died, 100 were injured, and 2,500 people were left without homes. Tectonic setting The Azores Islands mark the location where the African (Nubian), Eurasian and North American plates meet at the ride-ridge-fault Azores Triple Junction. To the west is the Mid-Atlantic ridge; a 16,000-km-long divergent boundary on the seafloor of the Atlantic Ocean which separates the Eurasian Plate from the North American Plate. East of the Azores is the Azores–Gibraltar Transform Fault, specifically the strike-slip Gloria Fault which serves as the boundary between the Nubian and Eurasian plates. The plate boundaries are seismically active and capable of producing l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horta, Azores
Horta () is a municipality and city in the Portuguese archipelago of the Azores encompassing the island of Faial. The population in 2011 was 15,038 in an area of The city of Horta itself has a population of about 7,000. Horta's marina is a primary stop for yachts crossing the Atlantic Ocean, and its walls and walkways are covered with paintings created by visitors noting the names of their vessels, crews, and the years they visited. Peter's Cafe Sport is a bar located across from the marina that houses the island's scrimshaw museum, a collection of artifacts carved from whale tooth and jawbone. Peter's is a point of reference for transatlantic yachters and sailors. History 15th through 17th centuries In 1467 the Flemish nobleman Josse van Huerter returned to Faial on a second expedition, this time disembarking along the shore of what would be known as Horta Bay. He built a small chapel which would later form the nucleus of a small community known as Horta, a name possibly deri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Divergent Boundary
In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other. Divergent boundaries within continents initially produce rifts, which eventually become rift valleys. Most active divergent plate boundaries occur between oceanic plates and exist as mid-oceanic ridges. Current research indicates that complex convection within the Earth's mantle allows material to rise to the base of the lithosphere beneath each divergent plate boundary. This supplies the area with huge amounts of heat and a reduction in pressure that melts rock from the asthenosphere (or upper mantle) beneath the rift area, forming large flood basalt or lava flows. Each eruption occurs in only a part of the plate boundary at any one time, but when it does occur, it fills in the opening gap as the two opposing plates move away from each other. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Macroseismic Scale
The European macroseismic scale (EMS) is the basis for evaluation of seismic intensity in European countries and is also used in a number of countries outside Europe. Issued in 1998 as an update of the test version from 1992, the scale is referred to as EMS-98. Overview The history of the EMS began in 1988 when the European Seismological Commission (ESC) decided to review and update the Medvedev–Sponheuer–Karnik scale (MSK-64), which was used in its basic form in Europe for almost a quarter of a century. After more than five years of intensive research and development and a four-year testing period, the new scale was officially released. In 1996 the XXV General Assembly of the ESC in Reykjavík passed a resolution recommending the adoption of the new scale by the member countries of the European Seismological Commission. The European macroseismic scale EMS-98 is the first seismic intensity scale designed to encourage co-operation between engineers and seismologists, rather tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modified Mercalli Intensity Scale
The Modified Mercalli intensity scale (MM, MMI, or MCS), developed from Giuseppe Mercalli's Mercalli intensity scale of 1902, is a seismic intensity scale used for measuring the intensity of shaking produced by an earthquake. It measures the effects of an earthquake at a given location, distinguished from the earthquake's inherent force or strength as measured by seismic magnitude scales (such as the "" magnitude usually reported for an earthquake). While shaking is caused by the seismic energy released by an earthquake, earthquakes differ in how much of their energy is radiated as seismic waves. Deeper earthquakes also have less interaction with the surface, and their energy is spread out across a larger volume. Shaking intensity is localized, generally diminishing with distance from the earthquake's epicenter, but can be amplified in sedimentary basins and certain kinds of unconsolidated soils. Intensity scales empirically categorize the intensity of shaking based on the effect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farol Da Ribeirinha 2013
Farol is a municipality in the state of Paraná in the Southern Region of Brazil. See also *List of municipalities in Paraná This is a list of the municipalities in the state of Paraná (PR), located in the South Region of Brazil. Paraná is divided into 399 municipalities, which are grouped into 39 microregions, which are grouped into 10 mesoregions. See also * ... References Municipalities in Paraná {{ParanáBR-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Normal Fault
In geology, a fault is a planar fracture or discontinuity in a volume of rock across which there has been significant displacement as a result of rock-mass movements. Large faults within Earth's crust result from the action of plate tectonic forces, with the largest forming the boundaries between the plates, such as the megathrust faults of subduction zones or transform faults. Energy release associated with rapid movement on active faults is the cause of most earthquakes. Faults may also displace slowly, by aseismic creep. A ''fault plane'' is the plane that represents the fracture surface of a fault. A ''fault trace'' or ''fault line'' is a place where the fault can be seen or mapped on the surface. A fault trace is also the line commonly plotted on geologic maps to represent a fault. A ''fault zone'' is a cluster of parallel faults. However, the term is also used for the zone of crushed rock along a single fault. Prolonged motion along closely spaced faults can blur the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulletin Of Earthquake Engineering
The ''Bulletin of Earthquake Engineering'' is a bimonthly peer-reviewed scientific journal published by Springer Science+Business Media on behalf of the European Association for Earthquake Engineering. It covers all aspects of earthquake engineering. It was established in 2003 and the editor-in-chief is Atilla Ansal ( Ozyegin University). Abstracting and indexing This journal is abstracted and indexed in: According to the ''Journal Citation Reports'', the journal has a 2020 impact factor The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as i ... of 3.827. References External links * Earthquake engineering Springer Science+Business Media academic journals Quarterly journals English-language journals Engineering journals Publications established in 2003 {{engineering-j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elsevier
Elsevier () is a Dutch academic publishing company specializing in scientific, technical, and medical content. Its products include journals such as ''The Lancet'', ''Cell'', the ScienceDirect collection of electronic journals, '' Trends'', the '' Current Opinion'' series, the online citation database Scopus, the SciVal tool for measuring research performance, the ClinicalKey search engine for clinicians, and the ClinicalPath evidence-based cancer care service. Elsevier's products and services also include digital tools for data management, instruction, research analytics and assessment. Elsevier is part of the RELX Group (known until 2015 as Reed Elsevier), a publicly traded company. According to RELX reports, in 2021 Elsevier published more than 600,000 articles annually in over 2,700 journals; as of 2018 its archives contained over 17 million documents and 40,000 e-books, with over one billion annual downloads. Researchers have criticized Elsevier for its high profit marg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tectonophysics
Tectonophysics, a branch of geophysics, is the study of the physical processes that underlie tectonic deformation. The field encompasses the spatial patterns of stress, strain, and differing rheologies in the lithosphere and asthenosphere of the Earth; and the relationships between these patterns and the observed patterns of deformation due to plate tectonics. Overview Tectonophysics is concerned with movements in the Earth's crust and deformations over scales from meters to thousands of kilometers. Examples of such processes include mountain building, the formation of sedimentary basins, postglacial rebound of regions such as Fennoscandia, plate tectonics, volcanoes and earthquakes. This involves the measurement of a hierarchy of strain Strain may refer to: Science and technology * Strain (biology), variants of plants, viruses or bacteria; or an inbred animal used for experimental purposes * Strain (chemistry), a chemical stress of a molecule * Strain (injury), an injury to a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fault Plane Solution
The focal mechanism of an earthquake describes the deformation in the source region that generates the seismic waves. In the case of a fault-related event it refers to the orientation of the fault plane that slipped and the slip vector and is also known as a fault-plane solution. Focal mechanisms are derived from a solution of the moment tensor for the earthquake, which itself is estimated by an analysis of observed seismic waveforms. The focal mechanism can be derived from observing the pattern of "first motions", that is, whether the first arriving P waves break up or down. This method was used before waveforms were recorded and analysed digitally and this method is still used for earthquakes too small for easy moment tensor solution. Focal mechanisms are now mainly derived using semi-automatic analysis of the recorded waveforms. Moment tensor solutions The moment tensor solution is typically displayed graphically using a so-called ''beachball'' diagram. The pattern of ene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1941 Gloria Fault Earthquake
The 1941 Gloria Fault earthquake occurred at 18:03:57 Coordinated Universal Time, UTC in the northern Atlantic Ocean on 25 November 1941. It had a magnitude of about 8.0 on the moment magnitude scale and a maximum perceived intensity of IX (''Violent'') on the Mercalli intensity scale. It was caused by movement on the Gloria Fault, part of the Azores–Gibraltar Transform Fault. It triggered a small tsunami, which was observed at Newlyn, Cornwall. See also *List of earthquakes in 1941 References External links * {{Earthquakes in 1941 1941 earthquakes 1940s tsunamis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980 Azores Islands Earthquake
Striking the Autonomous Region of Azores on 1 January, the 1980 Azores Island earthquake killed 61 people and injured over 400, causing severe damage on the islands of Terceira and São Jorge. Measuring 6.9 on the moment magnitude scale, it also shook the islands of Pico and Faial, and resulted from a strike slip fracture, typical of other historical Azorean earthquakes. In response to the earthquake, Portuguese president António Ramalho Eanes announced three days of national mourning, while relief efforts, initiated by agents of the local Air Force, were soon accompanied by government-supported agencies. Geology Background In 1950, another strong earthquake had rocked the Azores Islands region, and this was the largest earthquake since.Western Newspapers (2 January 1980) Description Volcanic in origin, the Azores lie in a tectonically complex area on either side of the Mid-Atlantic Ridge, between the European, American and African plate boundaries, forming thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
