查询词典 volcanic eruption

It includes a chronology of the 79 AD eruption, details of the pyroclastic flow and then compares the events to other modern volcanic eruptions.

该研究是John Dobbins主持的庞培讨论会的一部分，提供了公元39年火山灰的年表，详细阐述了火山灰流的资料，然后对比了当时火山和现代其他火山爆发的异同。

Nor is explosive power the only measure of a volcano's spitefulness. The eruption of Laki, an Icelandic volcanic fissure, in 1783 sent poisonous gases across Europe.

然而爆发力不是衡量火山威力的唯一标准。1783年，冰岛莱基的火山裂缝曾排出有毒气体，并使其遍布欧洲。

Professor Stanley Ambrose of the University of Illinois at Urbana-Champaign believes that the eruption of the volcano Toba in Sumatra roughly 70,000 years ago was responsible for a volcanic winter that caused an instant ice age.

伊利诺大学的安不罗斯教授认为，位于苏门答腊的多巴火山在70，000年前的一次喷发与因火山冬季瞬间形成的冰河时期有着一定的联系。

He Youngest Toba Tuff eruption was the greatest single volcanic event which occuned in the Quaternary, dated back to 74 ± 2 ka., and bad important impacts on global environmental and climatic changes.

oba火山活动是第四纪最大的火山事件，其中最年轻的约0.074Ma的火山活动被称为YTT事件。

Of them, we proposed the term of the Toyon volcanogroup in the first time. All the volcanoes can be subdivided into two types: central-eruption-typeand flood-basalt-type, building a series of volcanic mechanism, including calderas, volcanicnecks and cone sheets.

托云火山岩是由多个近于同时喷发的火山口的喷出物复杂堆积的产物，这些火山口可以划分成中心式火山和溢流玄武岩两种类型，它们共同组成了托云火山群。

The two volcanic materials are similar but are also different ①the partition mode of rare-earth element is similar to that of the basalt.②the increase content of the rare-earth element content in transitional layer shows that it enrichs in this segment due to the volcano events. Moreover, the comparability of the partition mode shows that the volcano-genic materials and the basalt are of the same source.③low Eu anomaly different from the high Eu anomaly of medium-acidic tuff in Meishan section, that show that their formation is different④there are plentiful basalt detritus.⑤there are enrichment of the Ti element.⑥the lower content of siderophile element of Ni and Co, especially in the transitional layer, show that there were not extraterrestrial events and big scale basic or ultrabasic volcano eruption events in this area. These characteristics show that the sedimentary source of Xuanwei Formation and Kayitou Formation is basalt.

1稀土元素配分模式与玄武岩类似；(2)稀土元素含量在异常层的增加反映了火山事件导致了它在该段地层中的富集，而配分模式的相似性反映了火山物质来源与玄武岩具有同源性；(3)低"Eu"异常区别于煤山剖面的中酸性凝灰岩高"Eu"异常模式，说明界线粘土岩成因也不同于煤山剖面的界线粘土；(4)大量的玄武岩岩屑；(5)Ti元素的富集；(6)亲铁元素Ni和Co含量较低，特别是在界线异常层含量降低，表明本区在界线处可能并不存在地外事件和大规模基性、超基性火山喷发事件，这些特征反映本区宣威组和卡以头组物质来源主要为玄武岩。

For comparison, the St. Helens eruption released between 1 and 2 cubic kilometers of material in the form of volcanic ash.

相比之下，圣海伦斯火山爆发释放之间的1和2立方米多公里的材料，在形式的火山灰。

The ages of bake layers of xenolith within the volcanic lava associated with the recent eruption in Wudalianchi volcanic cluster have been dated by TL dating technique for the first time.

首次利用TL测年技术，测定了五大连池火山群中两座最新喷发的火山熔岩中的烘烤捕虏体的年代。

Over one hundred sixty volcanic cones,pyroclastic sheet,river valley lava and eight maars with phreatomagmatic eruption genesis distribute of Longgang volcano,Jilin Province.The volcanic rock of Longgang volcano is trachybasalt with very similar chemical composition(SiO2=48-50%).

龙岗火山区分布160多个玄武质火山渣锥，以及火山碎屑席、河谷熔岩和8个射气岩浆喷发的低平火山口－龙湾，所有火山岩为单一钾质粗面玄武岩(SiO2变化于48-50%)。

Analyzing through the Maar transformation Image's character , a way of measuring margin of intricate object was to be brought forward by setting new estimation rule . As an essential and important type of volcanic activity on earth , phreato ma gmatic eruption is characterized by groundwater-related explosive eruption and subsequent base surge deposit and maar lakes .

通过对 Maar 变换后图像特征的深入分析，设置新的判断准则，提出了一种针对复杂物体边缘检测的算法流私，可以对具有&尖锐角&的物体轮廓进行快速准确地提取，同时利用矢量化方法消除毛刺，使跟踪获得的边界更符合物体的实际轮廓特征。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。