首页 >  > 


時間:2022-08-23 來源:本站 點擊:258次

Possibility of further volcanic eruptions in Tonga can't be excluded, says expert******

The volcano in Tonga might go quiet after eruption, but the possibility of further explosions can't be excluded, a British expert on volcanoes said Tuesday.。

As rescue teams continued to head to the collection of islands in the Pacific Ocean, Professor Mike Burton from the University of Manchester told Xinhua in an interview that "Because the volcano is basically submarine, we don't know what's going on."

"Almost anything could happen, and we just have to wait and see at this point," said the volcanologist at the university's Department of Earth and Environmental Sciences.。

The eruption on Saturday propelled thousands of tons of ash high into the atmosphere and set off a tsunami. Many of the roughly 170 islands around Tonga are covered with a thick layer of volcanic ash.。

The Tonga volcano, hundreds of kilometers underwater, and around 65 kilometers from Tonga's capital, is something of a mystery, said Burton, who tries to understand when a volcano might erupt by measuring the flux and composition of the often deadly poisonous gases created by volcanic activity.。

"The latest eruption which occurred on January 15 is possibly the biggest eruption we've seen for the last 30 or 40 years. I say possibly, because there are still some question marks over exactly what happened," he said.。

"It appears to be contradictory in some ways. In one sense, there's a sign that this was a very powerful, very big explosion, as it appeared to have gone up very high into the atmosphere, up to about 35 kilometers in height," Burton said.。

"To get that high in the atmosphere, you normally need a huge amount of material to erupt. But instead there's observation suggesting there wasn't that much material that erupted. This comes from both looking at the ash fallout and from the amount of gas released," he added.。

Burton said whether the main eruption is a prelude to another big eruption is yet unknown.。

The impact of the Tonga eruption was felt as far away as in Peru and Japan, and it seems to have damaged Tonga in particular, he said, adding that as the eruption seems to have severed the only communication cable into Tonga, the magnitude of the damage suffered by Tonga is still sketchy.。

Looking to the immediate future, Burton said one of the biggest threats, which isn't immediately obvious, is the risk of a deadly lava flow if there are rainstorms.。

"You can imagine if you get lots of fine ash and coarser ash landing on the ground in depths of meters, and then there's big heavy rainfall, you can get big mud flows which can be very destructive," he warned.。

As for any risk to the wider area of the Pacific Rim, Burton said it might impact ozone concentrations.。

"Because there was obviously a big interaction with seawater, it may be possible there were some unusual chemicals which were injected in great amounts into the stratosphere, things like chlorine and hydrogen chloride. It is one of the gases which can destroy ozone," he said.。

Burton said the risk of a future tsunami hitting China was now unlikely.。

"The impact of the tsunami was within 24 hours or 36 hours of the actual eruption. Now that we're three days past the eruption, the likelihood is there is no more tsunami coming out from the eruption," he said.。








  汽柴油价格进入升多降少时期,西安市场92号汽油每升临近8元,陕南价区突破8元。2月17日上一轮调价,西安地区98号汽油已临10元大关,以延长壳牌加油站为例,西安地区每升为9.89元,华商报记者咨询西安市一加油站,本次98号汽油预计每升涨价0.2元左右,将会突破10元。华商报记者 李婧



【彩票app-首页👉👉十年信誉大平台,点击进入👉👉 打造国内最专业最具信赖的彩票平台,为您提供彩票app-首页用户登录全网最精准计划软件,APP下载登陆,强大的竞彩网上推荐!!】

China remains Mongolia's top export destination, import supplier in first 10 months******

ULAN BATOR, Nov. 18 (Xinhua) -- China remains Mongolia's top export destination in the first 10 months of this year, accounting for 86.3 percent of Mongolia's total exports, the Mongolian National Statistics Office (NSO) said Thursday.。

The world's second-largest economy also remained Mongolia's top import supplier in the January-October period, accounting for 39.7 percent of the latter's total imports, the NSO said.。

Mongolia traded with a total of 151 economies around the world in the above-mentioned period, during which the landlocked Asian country's foreign trade volume reached 13.2 billion U.S. dollars, up 26.3 percent from the same period of last year, according to the statistical agency. Enditem。

西安确诊病例数不断降低 为什么要做积放核酸检测******









2.孙春兰在一线督阵9天 海南疫情终于迎来一个重大变化


4.为应对蓄意逃避兵役 台军提高免除兵役门槛挨批

© 1996 - 彩票app-首页 版权所有 xxxxx




最新数据:三江源国家公园面积超1000平方米的湖泊达167个| LPR再降!100万房贷30年减少3.18万元| 比恒大还牛的升班马!13战12胜1平领跑| 2022通航博览会将在长沙株洲两地举行| 美女把客厅爆改成影院 再也不用费钱出去看电影| 蔡徐坤穿流苏卫衣配皮裤 造型帅酷又有型| 公安部交通管理科学研究所:不存在“2022年红绿灯新国标”| 众人泪目!卡塞米罗离别 安帅起立拥抱眼角满是泪痕| 终于官宣!华为Mate50系列旗舰将于9月6日发布| 小米造车500天,雷军现在反悔还来得及| 航行警告!珠江口外伶仃岛东部海域开展军事活动| 俄一艘6000吨级大型战舰入列 专门用于执行两栖作战任务| 低钠盐有助于调理血压,降低、心脏病风险| 亚洲杯中国女排25-6后险遭大逆转 3-2越南获两连胜| 我在国内gap,申请留学、攒大厂实习、被hr质疑,比正常毕业还累| 中纪委机关报披露最新细节:自首的原州长,姐妹俩一起贪腐!| 俄军接装新型无人直升机 将用于研究反无人机作战| 2022中国国际智能产业博览会开幕|