1) what is the annual probability of ash fall of 1cm in the Mount Rainier region

Question

1) what is the annual probability of ash fall of 1cm in the Mount Rainier region?
2) what large city is likely to be inpacted by an eruption if Mount Rainier?
3) what information did the hazard map-makers use to determine the possible hazards and their extent?
4) what geographic feature(s) determines the nature of the lahar distribution- you will note that these are not found everywhere...?
5) how might you account for the variable width of the predicted lahars? 1) what is the annual probability of ash fall of 1cm in the Mount Rainier region?
2) what large city is likely to be inpacted by an eruption if Mount Rainier?
3) what information did the hazard map-makers use to determine the possible hazards and their extent?
4) what geographic feature(s) determines the nature of the lahar distribution- you will note that these are not found everywhere...?
5) how might you account for the variable width of the predicted lahars?

Explanation / Answer

1)  Mount Rainier region have annual probability of ash fall of 1 centimeters of 1 in 500.

2) Seattle, Tacoma and Washington are the large cities likely to be impacted by an eruption of Mount Rainier.

3)

Disaster prevention is essential to shield human lives, properties and social infrastructure against disaster phenomena. One of the basic resolutions to decrease the loss of life and damages is to eradicate the disaster phenomenon or the point of contact with the social activities.

There are five important types of information essential for disaster prevention:-

4) Lahars are the debris flow consists of large amount of volcanic materials. It consisted of slurry of pyroclastic material, rocky debris, and water. There are three main classes of lahars by origin (1) formed by the direct and immediate result of eruptions through crater lakes, snow or ice, and heavy rains falling during or immediately after an eruption on abundant unstable loose material. (2) Created indirectly from eruptions such as normally happen shortly after eruptions by triggering of lahars from earthquakes or rapid drainage of lakes blocked by erupted products (3) also these are not linked to simultaneous volcanic activity, happening by draft of loose tephra by heavy rain or meltwater on steep slopes of volcanoes by rain or meltwater from snow seeping into loose debris at any phase of volcano cone-building or cone degradation.

5) Lahars typically move down valleys. It has a broad range of velocities - 1 m/s to 40 m/s. It depends on the channel width, channel slope, volume of the flow, and grain size composition. It can move long distances. Some may travel hundreds of kilometers from their source. It also transport very large boulders.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.