天降奇坑(雙語有聲)
作者：nasca
來源：滬江論壇
2010-06-12 07:00
?
Dan Doctor on the May 2010 sinkhole in Guatemala City
EarthSky
Residents of an urban neighborhood in Guatemala City experienced the opening up of a giant sinkhole in May 2010. It swallowed a three-story building and left a deep hole. EarthSky spoke with Dan Doctor, a geologist at the U.S. Geological Survey, who studies sinkholes.
今年5月危地馬拉城市區(qū)內(nèi)出現(xiàn)了一次地陷，它吞噬了一幢三層房屋，留下一道深坑。記者就此采訪了美國地質(zhì)調(diào)查局地質(zhì)學(xué)家、研究地陷現(xiàn)象的專家丹·多科特。
Dan Doctor: We wouldn’t consider this to be a type of terrain which would be vulnerable to these types of sinkholes.
丹·多科特：危地馬拉城并不是容易發(fā)生此類地陷的地方。
Doctor said that sinkholes are created when the ground collapses into a void beneath the surface. This usually happens in places where water dissolves away rocks like limestone and gypsum. But that’s not Guatemala City. It’s built on volcanic rock and ash. Heavy rains from Tropical Storm Agatha might have stressed the city’s human infrastructure – water mains or sewer systems – to help create the May 2010 sinkhole.
多科特說，地陷是由地表陷入地下空洞造成的。這種現(xiàn)象通常發(fā)生在地質(zhì)為石灰石、石膏的巖溶地帶。而危地馬拉城并不屬于這樣的地質(zhì)帶。該城建立在火成巖與火山灰上。熱帶風(fēng)暴“阿加莎”可能破壞了城內(nèi)的總水管、污水排放系統(tǒng)這類基礎(chǔ)設(shè)施，導(dǎo)致今年5月這次地陷的發(fā)生。
Dan Doctor: In some cases, you can have rather significant voids formed in the subsurface that later will collapse if they reach the surface.
丹·多科特：有時(shí)地表以下會出現(xiàn)巨大的空洞，它們擴(kuò)張到地面就會造成塌陷。
This sinkhole is just 5 kilometers – or 3 miles – from where another sinkhole in Guatemala City opened in 2007. Local authorities and geologists are still investigating what caused the sinkhole. Doctor added that in the U.S. Florida is the only state he knows that requires sinkhole insurance for homes.
危地馬拉城2007年也出現(xiàn)過相似塌陷，與此次塌陷地點(diǎn)相距僅5千米（3英里）。當(dāng)?shù)毓賳T及地質(zhì)學(xué)家仍在調(diào)查此次地陷發(fā)生的原因。多科特進(jìn)一步指出，就他所知，福羅里達(dá)州是美國各州唯一要求家家戶戶辦理溶巖塌陷保險(xiǎn)的地方。
聲明：音視頻均來自互聯(lián)網(wǎng)鏈接，僅供學(xué)習(xí)使用。本網(wǎng)站自身不存儲、控制、修改被鏈接的內(nèi)容。"滬江英語"高度重視知識產(chǎn)權(quán)保護(hù)。當(dāng)如發(fā)現(xiàn)本網(wǎng)站發(fā)布的信息包含有侵犯其著作權(quán)的鏈接內(nèi)容時(shí)，請聯(lián)系我們，我們將依法采取措施移除相關(guān)內(nèi)容或屏蔽相關(guān)鏈接。
滬江網(wǎng)校夏季課程上線，足不出戶，和滬江網(wǎng)校一起天天向上，共同進(jìn)步吧！
- 相關(guān)熱點(diǎn)：
- 收益英文
