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VOLCANIC ASH
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DeCS
Descriptor
English
:
Volcanic Eruption
Descriptor
Spanish
:
Erupciones Volcánicas
Descriptor
Portuguese
:
Erupções Vulcânicas
Synonyms
English
:
Volcanic Ash
Volcanic Gases
Tree Number:
G03.230.100.200.900
SP4.001.037.403.514.260
SP8.473.654.762.802
Definition
English
:
The
ash
,
dust
,
gases
, and
lava
released by volcanic explosion. The
gases
are volatile matter composed principally of about 90%
water
vapor, and
carbon dioxide
,
sulfur dioxide
,
hydrogen
,
carbon monoxide
, and
nitrogen
. The
ash
or
dust
is pyroclastic
ejecta
and
lava
is molten extrusive material consisting mainly of
magnesium
silicate. (From McGraw-Hill
Dictionary
of Scientific and Technical Terms, 4th ed)
Indexing Annotation
English
:
specify geog
History Note
English
:
95; was VOLCANIC ERUPTIONS see NATURAL DISASTERS 1982-94
Allowable Qualifiers
English
:
adverse effects
analysis
classification
economics
ethics
history
legislation & jurisprudence
statistics & numerical data
Record Number:
31975
Unique Identifier:
D018707
Occurrence in VHL
:
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