# Questions tagged [impacts]

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### Luis Alvarez's K-T Impactor Calculation

I am trying to perform the calculation that Luis Alvarez used to establish the size of the K-T impactor. I used the following information: Assume that the clay layer with iridium was uniformly ...
51 views

### Ocean Greenhouse Gases Released by Meteorite Impact

A huge amount of $\small\mathsf{CO_2}$ is absorbed by the ocean and stored in the ocean, and methane is stored as clathrates. For every mega-meteorite or asteroid that impacts on land, two hit the sea....
66 views

### How reanalysis data influence our research/results?

I am a student and I have a very simple and yet important question about reanalysis data. Recently, I attended a workshop where various other students discussing the use of ERA5 reanalysis data on ...
104 views

### Climate consequences of very large asteroids striking the Deep Ocean

For every asteroid or meteorite that hits dry land, two hit the sea. If a Manicouagan-sized asteroid struck the deep ocean (but not above a trench),how would the H2O vapour, chlorine, iodine bromine ...
88 views

### What are these basal rip up clasts in North Dakota?

Ther's an graph that appears that the KT asteroid turned the rocks into rubble 3000 km away, else there was a rain of big rocks from the sky. What are the rip up clasts and what is the way they were ...
173 views

### Could dust blown up by a comet impact render the air unbreathable?

In the docudrama Super Comet After the Impact, the impact is shown to have made the air within a few miles of it unbreathable, and humans need gas masks to breath in this area. How realistic is this? ...
59 views

### Is there a large undersea caldera in the Azores?

There looks like a large undersea circular feature (Google maps) about 120km across with its north edge on Sao Miguel Island and its south edge on Santa Maria Island. Has any work been done to say ...
105 views

### Haean, South Korea: is it of volcanic or meteor impact origin?

This is a layman's question. While looking for something I read in the news today, I stumbled upon the Haean region in South Korea (38Ā°17'15.96"N, 128Ā° 7'57.18"E) in Google Earth. To me it looks ...
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### Sediment boundarys produced by largest meteors? Vredefort, Sudbury and Chicxulub

Chicxulub crater is the third largest crater on earth, which is said to have produced the KT boundary. What is the sediment layer produced by the 1st and 2nd largest craters? Also, there many ...
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### If an asteroid strikes a glacier, does it make a print on the land below?

If an asteroid strikes a glacier, does it make a print on the land below? For example, a 10 km wide asteroid on a 2 km thick glacier, or a 2 km wide asteroid on a 2 km thick glacier.
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### What techniques are used to date asteroid impacts?

How do scientists use data at the crater site to estimate when a meteorite or asteroid impacted the earth?
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### Why would a Martian tsunami travel at only 200 km/hour, four times slower than on Earth?

The news article Impact crater linked to Martian tsunamis describes results of numerical calculations which address the possibility that a giant martian tsunami triggered by an impact has left ...
380 views

### Chicxulub Asteroid Remains?

Do scientists know if the Chicxulub asteroid disintegrated completely upon impact or if any (large or small) chunks of the asteroid remained intact? If it is possible that a significant fragment of ...