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Strombolicchio
Strombolicchio () is a sea stack of volcanic origin to the northeast of the island of Stromboli in the Aeolian Islands of Italy. Its name in the Sicilian language, ''Struognulicchiu'', means ''Little Stromboli''. Geologically, Strombolicchio is a volcanic plug or spine of extremely hard compacted basalt resistant to erosion, and is the remnant of the original volcano from which the island of Stromboli was built up about 200,000 years ago. The small islet hosts rare flora and fauna, including endangered species, and has been declared a natural reserve with severe restrictions on access. Geology Geologically, Strombolicchio is a volcanic plug or spine of extremely hard compacted basalt resistant to erosion, and is the remnant of the original volcano from which the island of Stromboli was built up. Eruptions at this site ceased approximately 200,000 years ago. Since then the volcanic activity has moved about to the southwest. It is the only remnant above sea level of an otherwi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Plug
A volcanic plug, also called a volcanic neck or lava neck, is a volcano, volcanic object created when magma hardens within a Volcanic vent, vent on an active volcano. When present, a plug can cause an extreme build-up of high gas pressure if rising Volatile (astrogeology)#Igneous petrology, volatile-charged magma is trapped beneath it, and this can sometimes lead to an explosive eruption. In a plinian eruption the plug is destroyed and ash is ejected. Glaciation, Glacial erosion can lead to exposure of the plug on one side, while a long slope of material remains on the opposite side. Such landforms are called crag and tail. If a plug is preserved, erosion may remove the surrounding rock while the erosion-resistant plug remains, producing a distinctive upstanding landform. Examples of volcanic plugs Africa Near the village of Rhumsiki in the Far North Region (Cameroon), Far North Province of Cameroon, Kapsiki Peak is an example of a volcanic plug and is one of the most phot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Islands Of Italy
This is a list of islands of Italy. There are nearly 450 islands in Italy, including islands in the Mediterranean Sea (including the marginal seas: Adriatic Sea, Ionian Sea, Libyan Sea, Ligurian Sea, Sea of Sardinia, Tyrrhenian Sea, and inland islands in lakes and rivers. The largest island is Sicily with an area of . The outlying islands of Italy make up an official region of Insular Italy with an area of . Insular Italy Italy has a coastline and border of on the Mediterranean Sea. The following sections list the islands by coastal region, major island, lagoon, or archipelago. Calabria Islands off the coast of Calabria include: * - *Cirella - *Coreca Reefs - *Dino, Calabria, Isola di Dino (uninhabited) - *Formiche Skerries - *Galea Skerries - *Galera Skerries - *Godano Skerry - * - * - * - * - * - * - * - * - *, * - *, * - * - *San Nicola Arcella, Scorzone Skerry - *, *, * - * - Campanian Archipelago Islands in the Campanian Archipelago include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stromboli
Stromboli ( , ; ) is an island in the Tyrrhenian Sea, off the north coast of Sicily, containing Mount Stromboli, one of the four active volcanoes in Italy. It is one of the seven Aeolian Islands, a volcanic arc north of Sicily, and the mythological home of Aeolus. The island, with an area of , represents the upper third of the volcano. Its population was about 500 . The volcano has erupted many times and is constantly active with minor eruptions, often visible from many points on the island and from the surrounding sea, giving rise to the island's nickname "Lighthouse of the Mediterranean". Etymology The name Stromboli is derived from the Ancient Greek name , () which was derived from (, 'round'), after the volcano's round, conical appearance when seen from a distance. Height and shape Stromboli stands above sea level, and over above the sea floor. The area of Stromboli island is . As of June 2024, there are two active craters at the peak, each with multiple vents show ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeolian Islands
The Aeolian Islands ( ; ; ), sometimes referred to as the Lipari Islands or Lipari group ( , ) after their largest island, are a volcanic archipelago in the Tyrrhenian Sea north of Sicily, said to be named after Aeolus, the mythical ruler of the winds. The islands' inhabitants are known as Aeolians (). The islands had a permanent population of 14,224 at the 2011 census; the latest official estimate is 15,419 as of 1 January 2019. The Aeolian Islands are a popular tourist destination in the summer and attract up to 600,000 visitors annually. There are seven significant islands: Lipari, Vulcano, Salina, Stromboli, Filicudi, Alicudi and Panarea, and a set of minor islands and rocks. Geography The Aeolian Islands are off the north coast of Sicily in the Tyrrhenian Sea. Vulcano is located closest to the Sicilian coast. Lipari and Salina follow to the north, Filicudi and Alicudi to the west, and Panarea and Stromboli to the northeast. In addition to these seven inhabited is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathymetry
Bathymetry (; ) is the study of underwater depth of ocean floors ('' seabed topography''), river floors, or lake floors. In other words, bathymetry is the underwater equivalent to hypsometry or topography. The first recorded evidence of water depth measurements are from Ancient Egypt over 3000 years ago. Bathymetry has various uses including the production of bathymetric charts to guide vessels and identify underwater hazards, the study of marine life near the floor of water bodies, coastline analysis and ocean dynamics, including predicting currents and tides. Bathymetric charts (not to be confused with '' hydrographic charts''), are typically produced to support safety of surface or sub-surface navigation, and usually show seafloor relief or terrain as contour lines (called '' depth contours'' or '' isobaths'') and selected depths ('' soundings''), and typically also provide surface navigational information. Bathymetric maps (a more general term where navigational safet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Side-scan Sonar
Side-scan sonar (also sometimes called side scan sonar, sidescan sonar, side imaging sonar, side-imaging sonar and bottom classification sonar) is a category of sonar system that is used to efficiently create an image of large areas of the sea floor. Uses Side scan sonar is used to image large areas of the seafloor quickly. Applications include surveys for marine archaeology, shipwreck hunting, search and recovery (SAR), and environmental monitoring. In conjunction with seafloor samples, it is able to provide an understanding of the differences in material and texture type of the seabed. Side-scan sonar imagery is also a commonly used tool to detect debris items and other obstructions on the seafloor that may be hazardous to shipping or to seafloor installations by the oil and gas industry. In addition, the status of pipelines and cables on the seafloor can be investigated using side-scan sonar. Side-scan data are frequently acquired along with bathymetric soundings and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Density Current
Density (volumetric mass density or specific mass) is the ratio of a substance's mass to its volume. The symbol most often used for density is ''ρ'' (the lower case Greek language, Greek letter rho), although the Latin letter ''D'' (or ''d'') can also be used: \rho = \frac, where ''ρ'' is the density, ''m'' is the mass, and ''V'' is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its weight per unit volume, although this is scientifically inaccurate this quantity is more specifically called specific weight. For a pure substance, the density is equal to its mass concentration (chemistry), mass concentration. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium is the densest known element at standard conditions for temperature and pressure. To simplify comparisons of density across different systems of units, it is sometimes replaced by t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciara Del Fuoco
Sciara del Fuoco is a Scree, talus scree or depression located on Stromboli, Stromboli Island in Italy. It runs along the island's northern flank and is bounded by two ridges. It now serves as a major tourist attraction on the island. Formation Sciara del Fuoco was formed as a result of a sector collapse around 5,000 years ago. Due to this, it is sometimes referred to as a scar. It was formed by lava, lapilli, and Incandescence, incandescent waste. References Volcanoes of Italy Stromboli Sector collapses {{Europe-geologic-formation-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pillow Lava
Pillow lavas are lavas that contain characteristic pillow-shaped structures that are attributed to the extrusion of the lava underwater, or ''subaqueous extrusion''. Pillow lavas in volcanic rock are characterized by thick sequences of discontinuous pillow-shaped masses, commonly up to one meter in diameter. They form the upper part of Oceanic_crust#Composition, Layer 2 of normal oceanic crust. Composition Pillow lavas are commonly of basaltic composition, although pillows formed of komatiite, picrite, boninite, basaltic andesite, andesite, dacite or even rhyolite are known. In general, the more felsic the composition (richer in silica - resulting in an Intermediate composition), the larger the pillows, due to the increase in viscosity of the erupting lava. Occurrence They occur wherever lava is extruded underwater, such as along marine hotspot (geology), hotspot volcano chains and the Divergent boundary, constructive plate boundaries of mid-ocean ridges. As new oceanic crust is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, invasive species, and climate change. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bassia
''Bassia'' is a genus of flowering plants in the family Amaranthaceae. They are distributed in the western Mediterranean to eastern Asia. Some occur outside their native ranges as introduced species. Description The species of genus ''Bassia'' are annuals or perennial subshrubs. Their leaves are variable. The flowers are normally inconspicuous, in spike-like inflorescences without bracteoles. The fruits are achenes. The seed contains an annular, horseshoe-shaped or folded embryo that surrounds the perisperm. The fruiting perianth remains either unappendaged or develops 5 wings. The wings are spiny in '' Bassia hyssopifolia''. According to its most recent description, the genus is defined by its three types of C4 "kochioid" leaf anatomy. Many other characters cannot be used to differentiate species from one another, because they are variable among individuals within the species. Habitat The genus mainly occurs in steppe and desert ecosystems. Some species can be found in rudera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capri
Capri ( , ; ) is an island located in the Tyrrhenian Sea off the Sorrento Peninsula, on the south side of the Gulf of Naples in the Campania region of Italy. A popular resort destination since the time of the Roman Republic, its natural beauty, historic sites, and upscale tourism have made it famous worldwide. The island is characterized by its rugged limestone landscape, sea stacks (Faraglioni), coastal grottoes including the renowned Blue Grotto (Capri), Blue Grotto, and high cliffs overlooking the sea. Notable features include the harbours of Marina Grande, Capri, Marina Grande and Marina Piccola, the panoramic Belvedere of Tragara, the ruins of Roman imperial villas such as Villa Jovis, and the towns of Capri (town), Capri and Anacapri, the latter situated higher up the slopes of Monte Solaro, the island's highest point. Administratively, Capri is part of the Metropolitan City of Naples within the Campania region. The island is divided into two municipalities (''comuni''): ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
