Aa_large.jpg(800 × 500 pixlar, filstorlek: 87 kbyte, MIME-typ: image/jpeg)

Sammanfattning

Beskrivning
English: Glowing `a`a lava flow front advancing over pahoehoe lava on the coastal plain of Kilauea Volcano, Hawaii. 'A'a (pronounced "ah-ah") is a Hawaiian term for lava flows that have a rough rubbly surface composed of broken lava blocks called clinkers. The incredibly spiny surface of a solidified 'a'a flow makes walking very difficult and slow. The clinkery surface actually covers a massive dense core, which is the most active part of the flow. As pasty lava in the core travels downslope, the clinkers are carried along at the surface. At the leading edge of an 'a'a flow, however, these cooled fragments tumble down the steep front and are buried by the advancing flow. This produces a layer of lava fragments both at the bottom and top of an 'a'a flow.
Datum c:a 1998
date QS:P,+1998-00-00T00:00:00Z/9,P1480,Q5727902
[1]
Källa https://web.archive.org/web/20080127043104/http://volcanoes.usgs.gov/Products/Pglossary/aa.html
Skapare USGS[2]
Tillstånd
(Återanvändning av denna fil)
Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

Bahasa Indonesia  català  čeština  Deutsch  eesti  English  español  français  galego  italiano  Nederlands  português  polski  sicilianu  suomi  Tiếng Việt  Türkçe  български  македонски  русский  മലയാളം  한국어  日本語  中文  中文(简体)  中文(繁體)  العربية  فارسی  +/−

Ursprunglig uppladdningslogg

Den ursprungliga beskrivningssidan fanns här. Alla följande användarnamn finns på en.wikipedia.
  • 2006-10-23 15:45 Edwardtbabinski 800×500×8 (89587 bytes) Source United States Government http://volcanoes.usgs.gov/Imgs/Jpg/Photoglossary/aa_large.jpg In difference to pāhoehoe, Aa is a term of Polynesian origin, pronounced Ah-ah, rough, jagged, spiny lava.
  • 2005-12-14 16:39 Orborde 800×500×8 (89587 bytes) {{PD-USGov-Interior-USGS}} [http://volcanoes.usgs.gov/9Products/Pglossary/aa.html]

Bildtexter

Ingen bildtext har definierats

Objekt som porträtteras i den här filen

motiv

image/jpeg

4c1eb9fd0997a60144f03e8b0a004a640b74f01d

89 587 byte

500 pixel

800 pixel

Filhistorik

Klicka på ett datum/klockslag för att se filen som den såg ut då.

Datum/TidMiniatyrbildDimensionerAnvändareKommentar
nuvarande24 april 2007 kl. 23.15Miniatyrbild för versionen från den 24 april 2007 kl. 23.15800 × 500 (87 kbyte)Alfonso"~commonswiki{{Information |Description=[http://volcanoes.usgs.gov/Products/Pglossary/aa.html] This is what is now lava. It used to be what was called magma. Magma is a hot substance that is deep with in the earth. Volcanoes grow just like humans do. They can grow up

Global filanvändning

Följande andra wikier använder denna fil:

Visa mer globalt användande av denna fil.

Metadata