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  3. Most seismologists assume that following a major earthquake and its aftersho

Most seismologists assume that following a major earthquake and its aftersho

游客2024-01-10  77
问题     Most seismologists assume that following a major earthquake and its aftershocks, the fault (a break in Earth’s crust where pressure can trigger an earthquake) will remain quiet until stresses have time to rebuild, typically over hundreds or thousands of years. Recent evidence of subtle interactions between earthquakes may overturn this assumption, however. According to the stress-triggering hypothesis, faults are unexpectedly responsive to subtle stresses they acquire as neighboring faults shift. Rather than simply dissipating, stress relieved during an earthquake travels along the fault, concentrating in sites nearby; even the smallest additional stresses may then trigger another quake along the fault or on a nearby fault. Although scientists have long viewed such subtle interactions as nonexistent, the hypothesis has explained the location and frequency of earthquakes following several destructive quakes in California, Japan, and Turkey. [br] The passage suggests that most seismologists believe which of the following about fault stresses?
选项 A、They are dissipated when they result in an earthquake.
B、They are transferred between neighboring faults.
C、They will not cause a major earthquake along the same fault in the space of a few years.
答案 A,C
解析 本题考查的是老观点。选项A正确，根据第四句lather than simply dissipating可推导出，老观点认为应力会被释放出来。C项正确，对应第一句的remain quiet until stresses have time to rebuild，typically over hundreds or thousands of years。B项对应的是新观点。
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