Volcanic eruptions are awesome and destructive; however, this natural phenomenon
is beneficial in the long term. One of the earliest known written records
of a natural disaster concerned the eruption of Pompeii in A.D. 79, and was
recorded by Pliny the Younger in his letters to the historian Tacitus (Jashemski,
1979). Volcanic eruptions, ranging in intensity and numbering between 17 and
27 per year during the past decade (Bullard, 1984), continue to remind us of
their potential impacts on the environment.
Volcanic Eruptions and Hazards:
What is a volcano?
A volcano is a vent or 'chimney' that connects molten rock (magma) from within the Earth’s crust to the Earth's surface. The volcano includes the surrounding cone of erupted material.
Hydrocarbons provide our core energy resource. Information on their origin, properties and phase behavior is interesting from the point of view of physical chemistry. At the same time this information is of great value to the oil and gas industry. The book "Hydrocarbon" is comprised of 9 chapters, covering different topics: from origin of hydrocarbons to the method for hydrocarbon exploration. Distribution of polycyclic aromatic hydrocarbons in soil and their influence to environment are also discussed....
By the time you have reached the end of this tutorial you will be
able to construct a series of linked web pages for any subject that
includes formatted text, pictures, and hypertext links to other
web pages on the Internet. If you follow the steps for the Basic
Level (lessons 1-14) you will develop a page about volcanoes
and if you go on to the Advanced Level (lessons 15-29), you will
create an enhanced volcano web site.