1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Klio2033 [76]
3 years ago
12

What are three types of information that geologists evaluate when they monitor volcanoes and warn of imminent eruptions?

Biology
1 answer:
bazaltina [42]3 years ago
7 0

Answer:

Scientists use a wide variety of techniques to monitor volcanoes, including seismographic detection of the earthquakes and tremor that almost always precede eruptions, precise measurements of ground deformation that often accompanies the rise of magma, changes in volcanic gas emissions, and changes in gravity and magnetic fields. Although not diagnostic individually, these techniques, when used in combination at well-monitored volcanoes, have resulted in successful predictions. At Pinatubo volcano (Philippines) in 1991, a successful forecast saved thousands of lives. The USGS Volcano Hazards Prgram notes that the key to an accurate short-term eruption forecast is being able to recognize when such monitored data show consistent changes from normal background levels of activity.

Monitoring-based forecasts are becoming much more reliable, but they remain imperfect. If scientists are fortunate, precursors to an eruption follow the same course as they followed before previous eruptions. Patterns often change, though, and wholly new behavior is observed. The best forecasts will be based on an integration of geologic history, realtime monitoring, and a deep understanding of the internal plumbing processes of the specific volcano. Even with the best of monitoring and interpretations, reliable forecasts are rarely possible more than a few days in advance of an eruption.

Some forecasts of volcanic eruptions are based on eruption recurrence intervals, but these are notoriously unreliable for two reasons: 1) few volcanoes are sufficiently well studied to provide an accurate eruptive history over the many hundreds, or tens of thousands, of years necessary to establish a reliable recurrence interval; and 2) few volcanoes maintain the same behavior for long (more often than not, as soon as a repetitive pattern becomes apparent, the volcano changes behavior).

Volcano observatories make forecasts with great caution as they can have huge impacts on the affected populations, in some cases forcing people to leave behind homes, farms, and livestock. Inaccurate forecasts can lead to unnecessary obligation of scarce resources and/or undermine residents' confidence in future forecasts.

Reliable forecasts, however, can be made by volcano observatory staff, who have the experience to interpret their monitoring that detects eruption precursors. Most nations with volcanoes have tasked an established observatory, run by the government or by a university, to provide eruption forecasts to the public. All of these observatories are members of the World Organization of Volcano Observatories (WOVO).

Explanation:

You might be interested in
freeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
mamaluj [8]

Okayyyyyyyyyyyy

thankssssssssssss

5 0
2 years ago
Read 2 more answers
Which of the following levels is the most inclusive,largest,and least specific of the choices A.phvlumB.classC.flamilyD.species
n200080 [17]
The answer is phylum
7 0
3 years ago
Please answer each
nexus9112 [7]

Answer:

Function of each male reproductive system-

They produce, maintain and transport sperm and semen . They discharge sperm into the female reproductive tract. They produce and secrete male sex hormones.

Function of each female reproductive system-

The ovaries produce the egg cells, called the ova or oocytes. The oocytes are then transported to the fallopian tube where fertilization by a sperm may occur.

8 0
2 years ago
Look at the graph below. Which statement is true based on the graph of an egg draw. A the speed of the egg is constant B the egg
Dmitriy789 [7]
If there was a graph i could help

5 0
3 years ago
Radiation is a method of thermal energy transfer that moves-
Montano1993 [528]

Answer:

-heat

Explanation:

Radiation happens when heat moves as energy waves, called infrared waves, directly from its source to something else. This is how the heat from the Sun gets to Earth. In fact, all hot things radiate heat to cooler things. When the heat waves hits the cooler thing, they make the molecules of the cooler object speed up.

Good luck!!

6 0
2 years ago
Read 2 more answers
Other questions:
  • He atmospheric cooling that occurs where and when aerosol pollution is the greatest is an example of: negative feedback
    14·1 answer
  • An individual whose genotype is AABbCc is crossed with an individual who is heterozygous for all three of these genes. If this c
    12·1 answer
  • 2. The Köppen classification system is used as a classification system for
    6·1 answer
  • What are the two types of global food webs
    5·2 answers
  • Which is the cell structure that is made of DNA that gives the master instructions for the cell?
    13·2 answers
  • Which position shows the Moon at Last Quarter?<br><br> A<br><br> E<br><br> C<br><br> F
    6·1 answer
  • How does RNA leader sequence affect Trp operon syst
    6·1 answer
  • What is one benefit of using tides for energy?
    9·2 answers
  • Glucose not immediately used by a plant is stored in the form of
    8·1 answer
  • PLEASE HELP ASAP PLEASE!!
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!