Sentences with phrase «tens of kilometres»

Here, collisions typically occur at less than a few tens of kilometres per second.

They are very hot and very dense, with an average mass of around two solar masses contained within a radius of tens of kilometres.

The seismic waves produced by the explosions will travel tens of kilometres down before being reflected back to the surface and detected by the 1000 instruments deployed.

The ocean is several tens of kilometres deep and surrounds a large rocky core.

For the first time, a computer model has shown how these holes can grow to be tens of kilometres across in a few hours.

But it creates a column of glowing gas tens of kilometres long and hundreds of metres wide.

They used airborne radar soundings and satellite data to show that beneath the glacial ice were valleys so deeply incised that some of them were hundreds of metres below sea level, at distances tens of kilometres from the sea.

The uneven distribution of material in the meteorite and calculations of its orbital trajectory suggest it came from an asteroid a few tens of kilometres wide.

The team's computer model shows that a mountain breeze is transporting the pesticides tens of kilometres (Environmental Science & Technology, DOI: 10.1021 / es0622709).

By using the research ship and robotic vehicles together, the NOC team were able to create a series of detailed maps of the site at different scales from tens of kilometres down to a few millimetres.

Any satellite within tens of kilometres would probably be destroyed and any unprotected satellites within hundreds of kilometres would risk being damaged or disabled.

Modern humans are unusually good long - distance runners: over distances of tens of kilometres, well - trained athletes can outrun a horse.

Another factor in their favour is that young raccoon dogs can travel tens of kilometres to find a territory — although this does mean that youngsters are frequently killed on roads.

Townsend says that using even the crude system he demonstrated this month will make it possible to communicate over several tens of kilometres.

Problems arise because practical constraints on the size of computers ensure that the horizontal distance between model grid - points may be as much as a degree or two of latitude or longitude — that is to say, a distance of many tens of kilometres.

The successful applicants flew to South Africa a few weeks later to help remove hominin bones and teeth from the cramped Dinaledi chamber in a cave system a few tens of kilometres from Johannesburg (see diagram).

«Especially important were measurements with two satellites only a few tens of kilometres from each other, in the region where the solar wind meets the Earth's magnetic field,» says Daniel Graham.

Carbon dioxide lidars provide estimates of wind structure and turbulence within a few tens of kilometres of the instrument.