Which type of earthquakes produce trans-oceanic tsunamis?

Question

BlackTom AI · Accepted Answer

Question: Which type of earthquakes produce trans-oceanic tsunamis?

Option 1: transform fault displacement. This involves horizontal movement along transform faults with minimal vertical displacement of the seafloor, so it generally does not cause large tsunami waves across oceans.

Option 2: megathrust earthquakes on a subduction zone. These events occur at plate boundaries where a large portion of the seafloor can be abruptly shoved upward, displacing a huge column of seawater and generating powerful trans-oceanic tsunamis.

Option 3: shallow crustal earthquakes. While they can cause local tsunamis if they happen under the sea, their overall energy source and vertical seafloor displacement are typically not sufficient to produce trans-oceanic tsunamis of major scale.

Option 4: normal fault displacement along a divergent margin. Divergent margins involve spreading centers with some vertical movement, but the generated tsunamis are usually smaller and more localized compared to megathrust events.

Option 5: deep earthquakes within the subducting plate. Deep-focus events occur well below the seafloor and generally do not cause significant vertical displacement of the ocean surface, so they are not the primary source of trans-oceanic tsunamis.

In summary, the most influential mechanism for generating large, ocean-spanning tsunamis is the abrupt vertical displacement associated with megathrust earthquakes at subduction zone interfaces. The other options involve less favorable geometry or depth for producing such widespread tsunamis.

Which type of earthquakes produce trans-oceanic tsunamis?单项选择题

类似问题

Which of the following statements about megathrust faults is true?

How do we know that a megathrust earthquake at the Cascadia subduction zone caused a large tsunami to hit the Pacific Northwest in 1700? (select all that apply)

Question at position 8 An excess of growth hormone (GH) before puberty can result in the development ofgigantism.Graves' disease.acromegaly.pituitary dwarfism.Clear my selection

Question at position 6 The most abundant supporting cells in the central nervous system are called Question Blank 1 of 1[input].

Question at position 5 In the eye, the lens functions tofocus light on the retina at the back of the eye.protect the surface of the eye.increase vision in low-light conditions.move the eye side to side.Clear my selection

Question at position 4 Olfactory (odor) receptors are chemoreceptors. TrueFalse

If the pKa of HCHO2 is 3.74 and the pH of an HCHO2/NaCHO2 solution is 3.00, which of the following is TRUE?

Identify the missing particle in the following nuclear equation: 92 236 𝑈 → 38 90 𝑆 𝑟 + ? + 2 0 1 𝑛 + 4 0 0 𝑔

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单