Iceland, the land of fire and ice

Post on 07-Sep-2014

696 views 5 download

Tags:

description

 

Transcript of Iceland, the land of fire and ice

ICELANDThe land of fire and ice

Iceland is situated near the polar circle,

white nights are quite common here in summer.

Midnight sun in the north of the country

Iceland is truly an island of extremes and contrasts,

where large glaciers dwell in the vicinity of some of the

most active volcanoes in the world, creating an unusual harmony of fire and ice.

The most famous and active volcano in Iceland is mount Hekla, which has erupted 18

times since 1104, the last time in the year 2000.

There are over hundred volcanoes on Iceland’s central plateau, most of which have not erupted in the past

thousand years.

However, between 30 and 40 are still active, meaning that they have erupted within last few centuries. 18 volcanoes have erupted since the settlement of Iceland.

Surtsey is an volcanic island and is called a stratovolcano. It is made from many layers

of ash, lava, and other particles. It is interesting that it just popped out of the ocean

in 1963.

The Surtsey Volcano

In two years the eruptions stopped but near its shores

a new island appeared – Sirtlingur.

Askja is a very complex volcano made up of three calderas. The volcano has mostly erupted basaltic material over its recent history. The calderas are formed by passive sinking of the land surface, much like we see in Hawai’i. However, at Askja, it appears that the calderas are formed more violently due to explosive eruptions out of the ring fractures bounding the calderas. The most recent activity at Askja was in 1961. That caldera-forming eruption in 1875 was large enough that ash and tephra fell as far away as Norway and Sweden.

Pseudocrater

The Lake Mivatn

Iceland is a geological "hot spot", causing the huge number of hot springs and

spouting geysers around the country. Iceland is packed with warm springs, pools,

fumaroles, mud pots, colourful soil and, of course, spouting geysers. The Geysir

area in Haukadalur valley is Iceland's most famous geothermal area, with the

world famous Geysir and Strokkur springs spouting regularly.

Historically, geothermal power has been limited to areas near tectonic plate

boundaries. Iceland, which lies on the mid-Atlantic Ridge, was basically formed

by the drifting apart of the American and Eurasian tectonic plates and therefore

creating the perfect settings for the usability of geothermal heat.

Fumaroles and mud pots

Solfatara –

a jet of sulfur dioxide and hydrogen sulfide with an admixture of water vapors, carbon

dioxide, and other gases. Solfataras are emitted from lava and other pyroclastic flows and through vents and

fissures in the walls and bottoms of craters

and on the slopes of volcanoes. Their

temperature ranges from 100° to 300°C.

Fumarolas -

emission of gases and vapours from a

volcanic conduit or a lava flow

Area of thermal fields in Krisuvik

A geyser is a hot spring that periodically erupts, throwing water into the air. The word geyser comes from the Icelandic verb geysa, "to gush".

Iceland uses geothermal energy for a diverse area of services, including electricity production, spas, home heating, fish farming, and industrial process heat. More than 95% of Iceland’s urban population heat their homes and buildings with geothermal energy.

It’s possible to swim in some rivers even in the cold weather. The water temperature is about 37 C.

Geothermal waters are being used as bathing areas.

Not only people use the Earth’s heat.

Hundreds of gulls seat on the warm soil of the

geothermal areas in the south part of island.

Streams of lava

Basalt cliffs of Skagafjordur

Beautiful volcanic landscapes

Differential weathering destroys volcanic area creating fanciful relief

forms

Basaltic sculptures

Basaltic island

Basaltic bridge

The gorge Elgjya at the river Skauta (the south of the island)

The rivers create beautiful cascades and bridges in the basaltic

rocks

The icelandic rivers are full of rises and waterfalls

The river Jokjulsau-a-Fielljum flows through basaltic areas

creating rises and gorges

Eruptive landscape of Iceland

Solid volcanic masses

Thawed waters of the Skaftafell glacier

Destructive activity of the rivers.

The river Jokjulsau-a-Felljum

The river Skeidra in the south of the

island starts at the glacier

Vatnajokjudl

The longest gorge within Iceland is located in the

National Park Jokjulsaurljuvjur in the

north-western part of the island.

The waterfall Detifoss at the river Jokjulsau-

a-Fiodljum is considered the

biggest one among european countries.

The bright rainbow above Detifoss

waterfall.

Skagafoss waterfall

Godafoss waterfall at the river

Skjyalfandaflet

Impressive waterfall Gullfoss at the river Hvita in the south

of the island

Selgafoss waterfall is one of the highest at the island.

The lake is situated in the crater of the volcano Askja in the north-east of the glacier Vatnajökull. Its name simply means the lake of Askja. It was created by an enormous volcanic eruption in 1875.

On July 10, 1907, two German scientists, Walter von Knebel and Max Rudloff disappeared while exploring the lake in a small boat.

Vatnajokull is the biggest glacier in Europe. It covers about 8% of the country and the average thickness is 400m.

Skaftafedl glacier in the south-west of Vatnajokull glacier

Icebergs split off the glaciers

Any visitor of Iceland will admire the beauty of the rugged landscapes of Iceland.

Today only 1 or 2 percent of the island's surface is covered by downy birch trees

A typical plant that generally grows all over Iceland in poor conditions but is quite conspicuous in these regions is the Moss campion.

Among the few flowers in Iceland one mark beautiful

orchids

Viola

Cotton grass is a typical flower in the black bog soil

Typical Icelandic landscape – volcanic

mountains and bog soils

Stadasveit area

Nootka Lupin and Lyme grasses are seemed to be the only species that prevent the slope erosion.

Atlantic Puffin – is the symbol of Iceland. These birds have

bright- coloured beaks and legs, very often

they are called “North Parrots”. The Atlantic Puffin likes to eat fish,

squid, and crustaceans.

Iceland is one of the main breeding

grounds for waterfowl in Europe. There are no fewer than 16 species of

duck known to nest in Iceland, including

two American species; Barrow's

Goldeneye and the Harlequin Duck.

The severe nature of the island attracts by its beauty

and extravagance.

The tourists travel around Iceland alone and in groups.

.

One of the oldest churches on the island

(XVIII century).

The modern church in

Reykjavík.