Nesta presentación ademais de aparecer prevencións contra riscos sísmicos e volcánicos aparecen vídeos dun terremoto real e dun volcán en erupción grabado desde o seu interior.
Nesta presentación ademais de aparecer prevencións contra riscos sísmicos e volcánicos aparecen vídeos dun terremoto real e dun volcán en erupción grabado desde o seu interior.
Proposto en 2011 como Lugar de importancia comunitaria (LIC) e Zona especial de conservación (ZEC). Está pendente de aprobación.
Inclúe a liña costeira entre Cabo Silleiro e A Guarda (concellos de Baiona, Oia, O Rosal e A Guarda) e unha ampla faixa marítima paralela á mesma.
Mount St Helens erupted on May 18th 1980, wiping out 370 miles of forest and killing everything within a 17-mile radius. The massive eruption was caused by magma building up under the volcano's surface until it found a way to burst through the northern flank of the mountain, exploding debris and ash across the landscape in an avalanche that turned day to night.
Mount St. Helens is a volcano located in Washington state. On May 18, 1980, the volcano erupted in a major explosion, causing widespread damage through ashfall and pyroclastic flows. The eruption killed 57 people and destroyed hundreds of homes and bridges. It was the largest eruption in U.S. history and resulted from a massive 5.1 magnitude earthquake that triggered a landslide on the north side of the volcano. The eruption removed over 1,300 feet from the top of the mountain and covered an area of over 230 square miles with ashfall.
Mount St. Helens erupted 34 years ago today, destroying hundreds of square miles. Mount St. Helens and other Cascades volcanoes are still considered active, so there is always a risk of future eruptions. People should remember the history of volcanic eruptions in the region and be prepared in case of future activity.
Mount Pinatubo is a volcano located on Luzon Island in the Philippines. After being dormant for over 500 years, the volcano erupted violently in June 1991, causing widespread destruction. The 1991 eruption was the second most destructive of the 20th century. It killed at least 800 people initially and destroyed thousands of homes and infrastructure. Ash and lava flows severely damaged crops and electricity lines. Long-term impacts included lahars threatening lives and property as well as formation of a new crater lake, Lake Pinatubo.
The 1991 eruption of Mount Pinatubo in the Philippines was the second largest of the 20th century. It began with small rumblings in April 1991 and escalated over the following months with increased seismic activity and ash plumes. The largest eruption occurred on June 15th, blasting over 12 cubic km of rock and ash up to 40 km into the sky. Nearly 800 people were killed and over 1 million were displaced. Ash falls and pyroclastic flows devastated the surrounding areas and had global climate impacts. Advance monitoring and evacuations helped minimize casualties from the devastating eruption.
Mount Pinatubo, located in the Philippines, erupted in 1991 after a period of increased seismic activity. The eruption ejected ash up to 34km into the atmosphere, covering over 125,000km2 in ash and destroying 800km2 of agricultural land. Over 800,000 livestock were killed and 1.2 million people lost their homes. Pyroclastic flows and lahars (volcanic mudflows) caused additional damage. International aid and relocation efforts helped respond to the eruption, but lahars continued to impact the area for years. The hazard is now managed through monitoring, hazard maps, and building designs to mitigate future lahar impacts.
Mt Etna is Europe's largest active volcano located on the east coast of Sicily. It was formed by the subduction of the African plate under the Eurasian plate. Over 25% of Sicily's population lives on Etna's fertile slopes and it is a key source of income through agriculture and tourism. During eruptions, authorities have taken measures like evacuations, building barriers to divert lava flows, and using explosives to protect nearby towns. Monitoring of Etna has improved over time to better predict and manage eruptive activity.
Mt. St. Helens is a volcano located in Washington State that last erupted in 1980. [1] The eruption killed 57 people and caused widespread damage and environmental impacts. [2] It produced a landslide and later pyroclastic flows that destroyed forests, homes and infrastructure. [3] The eruption had significant economic and social costs for the region.
O concello de Muros está situado no norte da ría de Muros e Noia, cunha costa que alterna áreas protexidas do interior da ría -na que abondan os areais, os esteiros e as enseadas con amplas zonas rochosas de pouca altura- e zonas expostas no mar aberto con rochedos e areais. É un concello que combina un grande atractivo natural cun importante patrimonio etnográfico e histórico-artístico. As principais actividades son a pesca e os seus derivados, e o turismo.
Proposto en 2011 como Lugar de importancia comunitaria (LIC) e Zona especial de conservación (ZEC). Está pendente de aprobación.
Inclúe a liña costeira entre Cabo Silleiro e A Guarda (concellos de Baiona, Oia, O Rosal e A Guarda) e unha ampla faixa marítima paralela á mesma.
Mount St Helens erupted on May 18th 1980, wiping out 370 miles of forest and killing everything within a 17-mile radius. The massive eruption was caused by magma building up under the volcano's surface until it found a way to burst through the northern flank of the mountain, exploding debris and ash across the landscape in an avalanche that turned day to night.
Mount St. Helens is a volcano located in Washington state. On May 18, 1980, the volcano erupted in a major explosion, causing widespread damage through ashfall and pyroclastic flows. The eruption killed 57 people and destroyed hundreds of homes and bridges. It was the largest eruption in U.S. history and resulted from a massive 5.1 magnitude earthquake that triggered a landslide on the north side of the volcano. The eruption removed over 1,300 feet from the top of the mountain and covered an area of over 230 square miles with ashfall.
Mount St. Helens erupted 34 years ago today, destroying hundreds of square miles. Mount St. Helens and other Cascades volcanoes are still considered active, so there is always a risk of future eruptions. People should remember the history of volcanic eruptions in the region and be prepared in case of future activity.
Mount Pinatubo is a volcano located on Luzon Island in the Philippines. After being dormant for over 500 years, the volcano erupted violently in June 1991, causing widespread destruction. The 1991 eruption was the second most destructive of the 20th century. It killed at least 800 people initially and destroyed thousands of homes and infrastructure. Ash and lava flows severely damaged crops and electricity lines. Long-term impacts included lahars threatening lives and property as well as formation of a new crater lake, Lake Pinatubo.
The 1991 eruption of Mount Pinatubo in the Philippines was the second largest of the 20th century. It began with small rumblings in April 1991 and escalated over the following months with increased seismic activity and ash plumes. The largest eruption occurred on June 15th, blasting over 12 cubic km of rock and ash up to 40 km into the sky. Nearly 800 people were killed and over 1 million were displaced. Ash falls and pyroclastic flows devastated the surrounding areas and had global climate impacts. Advance monitoring and evacuations helped minimize casualties from the devastating eruption.
Mount Pinatubo, located in the Philippines, erupted in 1991 after a period of increased seismic activity. The eruption ejected ash up to 34km into the atmosphere, covering over 125,000km2 in ash and destroying 800km2 of agricultural land. Over 800,000 livestock were killed and 1.2 million people lost their homes. Pyroclastic flows and lahars (volcanic mudflows) caused additional damage. International aid and relocation efforts helped respond to the eruption, but lahars continued to impact the area for years. The hazard is now managed through monitoring, hazard maps, and building designs to mitigate future lahar impacts.
Mt Etna is Europe's largest active volcano located on the east coast of Sicily. It was formed by the subduction of the African plate under the Eurasian plate. Over 25% of Sicily's population lives on Etna's fertile slopes and it is a key source of income through agriculture and tourism. During eruptions, authorities have taken measures like evacuations, building barriers to divert lava flows, and using explosives to protect nearby towns. Monitoring of Etna has improved over time to better predict and manage eruptive activity.
Mt. St. Helens is a volcano located in Washington State that last erupted in 1980. [1] The eruption killed 57 people and caused widespread damage and environmental impacts. [2] It produced a landslide and later pyroclastic flows that destroyed forests, homes and infrastructure. [3] The eruption had significant economic and social costs for the region.
O concello de Muros está situado no norte da ría de Muros e Noia, cunha costa que alterna áreas protexidas do interior da ría -na que abondan os areais, os esteiros e as enseadas con amplas zonas rochosas de pouca altura- e zonas expostas no mar aberto con rochedos e areais. É un concello que combina un grande atractivo natural cun importante patrimonio etnográfico e histórico-artístico. As principais actividades son a pesca e os seus derivados, e o turismo.
A Illa Grande de Hawaii é o edificio volcánico máís grande da Terra, con máis de 5.000 metros de altura sobre o nivel do mar e outros tantos baixo el. Aqui podemos ver unha descrición da súa orixe e o seu contexto xeolóxico.
O Río Umia, a inspiración desde a paisaxeiesasorey
Descrición da paisaxe do río Umia, que foi fonte de inspiración de poetas e do que xurdiron lendas que quedaron fixas na tradición oral galega. Elaborada por Aldara Rey Blanco, de 3º ESO B
Algumas das estradas mais incríveis do mundo incluem a estrada costeira na África do Sul, a estrada de Los Caracoles nos Andes chilenos, e a estrada siberiana para Yakutsk, a cidade mais fria do mundo.
O 26 de marzo cumplíronse 500 anos do nacemento de Conrad Gesner, considerado o fundador da zooloxía moderna
Johann Conrad Gessner foi un naturalista e bibliógrafo suízo que naceu en Zúrich en 1516 e morreu en decembro de 1565.
2. O volcán Soufrière Hills
atópase na Illa de
Montserrat.
Montserrat ten 915 m de
altura, a altura do volcán, e
unha superficie de 102 km2.
Forma parte dos volcáns
activos do arco volcánico das
Antillas Menores.
Permaneceu 350 anos
inactivo.
Entrou en erupción en 1995
e a capital quedou derruída
no ano 1997.
3. Historia de Montserrat
Cristóbal Colón reclamou a illa en 1493, e deulle o nome de
Montserrat. Pero en 1632 caeu baixo o control dos ingleses, e
poboouse por irlandeses.
En 1989 o furacán Hugo, de categoría 4, golpeou a illa danando máis do
90% das súas estruturas. A raíz disto, o turismo caeu notablemente.
En 1995, cando a illa xa case estaba recuperada do furacán Hugo, o
volcán Soufrière Hills, que permanecera en estado latente durante
séculos, comezou con unha erupción que acabou por soterrar a capital
da illa, Plymouth. Provocou a caída da economía de Montserrat. E
permaneceu nun período regular de erupcións
4.
5. Soufrière Hills
Soufrière Hills é un estratovolcán.
Forma parte dun arco de illas das
Antillas.
Está situado nunha zona de
subdución entre as placas do
Atlántico e do Caribe.
Ten un cráter de 1km de ancho.
6. • Este volcán formouse pola presión que tivo lugar
entre ambas placas, que ocasionou a subdución
dunha delas. Esta subdución deu lugar a magmas
que afloraron na superfice en forma de erupcións
volcánicas. Como esta zona está situada fondo
mariño, estes afloramentos de magma provocan a
formación de illas volcánicas, formando un arco de
illas paralelo á fosa formada pola subdución.
Debido a que este
volcán se atopa
nunha zona de
subdución, hai unha
frecuente actividade
sísmica, polo magma
xerado pola
subdución das
placas.
Formación
7. Erupción de 1995
Antes de 1995, sufríronse unha
serie de terremotos na illa de
Monrserrat.
En xullo de 1995, a illa é evacuada
pola seguridade dos cidadáns, xa
que o volcán emitía cinza e barro
sobre Plymouth. Nese mesmo mes
o Soufrière Hill manifestou unha
explosión freática nese mesmo
mes.
A partir deste ano comezou a
formarse un novo domo de lava.
8. Erupción de 1997
No ano 1997, o volcán
Soufrière Hills entrou de novo
en erupción, soltou unha nube
piroclástica que acabou coa
vida de 19 persoas. Os
materiais piroclásticos e a lava
producidos por esta erupción
soterraron as zonas colindantes
ó volcán, incluída a capital,
Plymouth.
10. Zonas afectadas
polas erupcións
Numerosas zonas do
sur da illa resultaron
danadas polos
materiais
piroclásticos e a lava.
Na actualidade, a
única zona habitada
é a parte norte.
11. Anos posteriores á erupción
Debido ás erupcións de 1995 e 1997, un gran número de persoas
abandonaron a illa, e pasou de ter 13000 habitantes a ter, na
actualidade, 6000.
As erupcións continuaron durante o resto da década dos 90.
No ano 2003, unha erupción provocou danos nos cultivos de
Montserrat, e tamén nos sistemas de distribución de auga do país.
En 2010, rexistrouse unha enorme nube de cinza volcánica que superou
o quilómetro de altura, provocando algúns retrasos aéreos.
A ultima erupción sucedeu no ano 2012.
Actualmente, hay unha capital provisional, e estase a construír unha
cidade, Little Bay, que nun futuro pasará a ser a capital.