Mega-tsunami Greenland Setinggi 200 Meter, Sempat Guncang Bumi Selama 9 Hari
Summary
TLDRIn September 2023, a landslide in Greenland triggered a mega tsunami with waves over 200 meters high, shaking the entire Earth for 9 days. The climate crisis caused glaciers in Dixonford to thin, leading to unstable landmasses collapsing into the sea. German researcher Angela Carrillo and her team discovered two seismic signals from the event, one from the landslide and another with a very long period lasting over a week. The tsunami and landslide destroyed sites over 200 years old, indicating an unprecedented disaster in at least two centuries. The Guardian reports that the event could recur as global temperatures rise.
Takeaways
- 🗓️ A landslide disaster occurred in Greenland in September 2023, which had a global impact.
- 🌊 The landslide triggered a mega tsunami in Dixonfiord, King Christian exelland, and East Greenland.
- 💥 The crisis was caused by climate change, leading to the thinning of glaciers and destabilization of land.
- 🌍 The tsunami waves were trapped in Dixonfiord and caused seismic waves that resonated worldwide for 9 days.
- 🔍 German researcher Angela Carrillo and colleagues discovered two different signals in seismic data from the disaster.
- 📊 One signal was a high-energy signal from the landslide that created the tsunami, and the other was a very long-period signal lasting over a week.
- 🌐 The analysis showed that the tsunami and landslide created VLP (Very Long Period) signals detected up to 5,000 km away.
- 🏞️ The tsunami and landslide destroyed sites that were 200 years old, indicating that such a disaster had not occurred in at least two centuries.
- 🧐 Researchers estimated that the unusual tsunami waves were caused by the movement and collision of 25 million m³ of ice and rock in the fjord waters.
- 🌡️ The event highlights the potential for such disasters to happen again with increasing global temperatures.
Q & A
2023年9月在格陵兰岛发生的滑坡和海啸有多严重?
-2023年9月在格陵兰岛发生的滑坡和海啸非常严重,引发了超过200米高的海啸,并且产生了持续9天的全球范围内的地震波。这次事件被称为'瀑布效应',由气候变化引起的冰川融化触发了大规模的山体滑坡,导致巨量岩石和冰体滑入海中,足以填满10000个奥运会规模的游泳池[^5^]。
格陵兰岛的滑坡和海啸是如何引发全球关注的?
-格陵兰岛的滑坡和海啸引发了全球关注,因为它们产生了一个持续了9天的神秘地震信号,这个信号在全球范围内的地震监测网络中被检测到,并且持续时间异常,与常规地震信号迅速减弱的特性不同[^5^]。
这次格陵兰岛的事件中,海啸是如何在峡湾中持续振荡的?
-在格陵兰岛的事件中,海啸在峡湾中形成了一种称为'seiche'的现象,即在封闭空间中的波浪节奏性运动。这次seiche现象持续了超过一周的时间,这是科学家之前未曾观察到的,通常seiche持续时间远短于这个事件[^5^]。
格陵兰岛的滑坡和海啸事件是否对人类活动区域造成了影响?
-是的,格陵兰岛的滑坡和海啸事件对人类活动区域产生了影响。虽然在事件发生时没有造成人员伤亡,但它摧毁了一些价值200,000美元的基础设施,并损坏了一个无人居住的研究站[^5^]。
这次事件是否与气候变化有关?
-是的,这次事件与气候变化有关。气候变化导致格陵兰岛的冰川融化,使得山体变得不稳定,最终导致了滑坡和海啸的发生[^5^]。
科学家是如何确定格陵兰岛滑坡和海啸事件的?
-科学家通过结合全球的地震记录、现场测量、卫星图像和计算机模拟来重建这一非凡事件。他们分析了地震波来模拟岩石-冰崩的动态和轨迹,以及它如何进入峡湾[^5^]。
这次事件是否是孤立的,还是可能再次发生?
-这次事件不是孤立的,随着全球气温的持续上升,类似的滑坡和海啸可能会变得更加常见,并可能带来致命的后果[^5^]。
格陵兰岛的这次事件对全球气候变化研究有何启示?
-格陵兰岛的这次事件为全球气候变化研究提供了直接观察气候变化对地球表面影响的实例,强调了极地地区由于全球变暖导致的不稳定性增加[^5^]。
这次格陵兰岛的事件是否对其他地区有潜在的影响?
-是的,这次事件对其他地区也有潜在的影响。如果类似的事件发生在常用航道上,可能会对游轮等造成严重后果[^5^]。
科学家们如何描述这次格陵兰岛的滑坡和海啸事件?
-科学家们将这次格陵兰岛的滑坡和海啸事件描述为'级联灾害',它是由人类引起的气候变化触发的一系列事件,导致了大规模的山体滑坡和海啸的发生[^10^]。
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