首页
登录
职称英语
Mudslide and PreventionVocabulary and Expressionsdebris flow topography
Mudslide and PreventionVocabulary and Expressionsdebris flow topography
游客
2025-01-26
8
管理
问题
Mudslide and Prevention
Vocabulary and Expressions
debris flow topography armor scallop
landslide disturbance roadcut terrain
saturate drain ... Off [br] Mudslides might be triggered by earthquakes or disturbances in hillsides.
Mudslide and Prevention
What is a mudslide? A mudslide, also called a debris flow, is a type of fast-moving landslide that follows a channel, such as a river. A landslide, in turn, is simply when rock, earth, or other debris moves down a slope.
Mudslides occur after water rapidly saturates the ground on a slope, such as during a heavy rainfall. According to O’Connor, it doesn’t take high relief in the topography to create a slide.
Rather, it just takes a pull of gravity strong enough to bring down material that is made fluid enough by water.
Mudslides tend to happen during wet seasons, says O’Connor. For the Pacific Northwest, that’s generally during winter or spring.
Mudslides are also often triggered by earthquakes or by disturbances in hillsides caused by fires or human activity.
In the United States, mudslides and landslides result in an average of 25 to 50 deaths a year, according to the Centers for Disease Control and Prevention (CDC).
How are mudslides prevented?
Strategies to decrease the risk of mudslides include draining water off hillsides, armoring the bases of hills so they are not undercut by rivers, and "loading the toe," says O’Connor. In the case of " loading the toe," engineers put heavy mass, such as large rocks, at the base of a hill to try to anchor the slope and prevent it from coming loose.
O’Connor says the piles of rock that are often seen at the base of roadcuts are the most visible example of that strategy.
O’Connor adds that when it comes to the Stillaguamish River area, the valley is scalloped with the evidence of many past slides.
"This isn’t a situation where the authorities should have done something to prevent it because there is so much terrain there that this could have happened to," he says.
The CDC recommends that people exercise caution around steep slopes during rainfall. Immediate signs of a pending slide include tilting trees and sudden increases or decreases in rivers.
选项
A、正确
B、错误
答案
A
解析
该表述是对原文相关内容的同义表述,因此本题表述正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3929727.html
相关试题推荐
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
MudslideandPreventionVocabularyandExpressionsdebrisflowtopography
Whatcausedthemudslideaccordingtotheresearchhydrologist?[br][originalt
Whatcausedthemudslideaccordingtotheresearchhydrologist?[br][originalt
随机试题
Didyouknowthatataskthat’sinterrupted(1)_____50%longerandhas50%
WiththeassassinationofPresidentMcKinley,TheodoreRoosevelt,notquite
ReturningtoScienceA)TeresaGarrettwasworkingpart-ti
InWesternCulturesyoudon’topenacloseddoorwithoutknocking,unlessit
A-----jobobjectiveJ-----nationalityB-----interestsandhobbie
IncreasedScreenTimeandWellbeingDeclineinYouthA)Havey
肾脏的内分泌功能A.分泌肾素 B.分泌前列腺素 C.分泌活性维生素D D.
幽门螺杆菌检测方法中特异性最高的是A.组织染色 B.基因诊断 C.C呼气试验
某祢居委会主任正在召集会议,与几位居民代表就开发社区服务项目进行商讨。会上,有位
下列关于地下水的说法错误的是()。A.地下水影响岩石的强度 B.地下水对
最新回复
(
0
)