Is it possible that.....?

Anything is possible, but in this case any geologic impact is highly unlikely. It is humbling to realize just how small the actions of humans are relative to the power of the earth. Even the largest underground tests in the US produced only small, localized earthquakes. Look at the pictures of the Java coast after the tsunami and consider the magnitude of the area destroyed - the estimates of wave force are in the range of hundreds of thousands of times the power of the Hiroshima atomic bomb. The power of the 9.3 earthquake makes nuke's looks puny, yet no secondary undersea landslides occurred, and no eruptions.

This is not to say that landslides aren't a serious concern. A recent Nova program on US PBS talked of the danger of a portion of one of the Canary Islands falling into the sea, and there is evidence that there have been repeated landslides of this sort in the Hawaiian Islands. This sort of event has the potential to produce massive tsunami, but these events are rare and none have been observed in modern times.

The link below has tons of good information on all things tsunami, including a link to a tsunami database. For me, this subject is more than a passing concern, as I live in Crescent City, California, the "tsunami magnet" of the California coast. The recent Kiril Islands quake produced negligible waves everywhere but here - our harbor sustained $1,200,000 damage from a 6-foot tsunami.

I don't think anything would happen to the underwater volcanoes, since the nuclear tests are done OVER the ocean and not under the ocean floor. However, the nuclear test itself might cause a tsunami, due to the updraft that forms an area of low pressure below the explosion, which might pull the ocean up, creating a wave. However, this would probably not be a big tsunami.

No. Those tests were conducted to long ago to be of any effect today. I think that the earth, and it's dynamics are going to need a lot more to be disturbed than a couple of relatively puny energy pulses caused by the nuclear blasts performed over half a century ago.

No, the tests were not conducted near any major plate boundaries. Test are no longer conducted above or below ground other than small tests in nations like North Korea.

No. Not possible. The nuke would have to be detonated under the ocean floor to have any chance of doing anything, and even then the effect would not last, if there is any effect at all.

It will not possibly affect and cause eruption and tsunami.

probably..test like this can cause many negative effects in our environment.

its not possible but jusst to make sure kill your self now So You Dont Have to die later!!!!!!!

yeah,maybe.

could be??