Turkey earthquake fault lines mapped from space
It seems almost insensitive to start to have a deep dive into the science behind Monday's earthquake events in Turkey.
More than 22,000 people are already confirmed dead and an unknown number still lie trapped, with the window for their rescue closing rapidly.
And yet the science will go on. The insights gleaned from this event will save lives in the future.
The data behind the Turkey map before and after the earthquake was acquired in the early hours of Friday by the European Union's Sentinel-1A satellite as it traversed north to south over Turkey at an altitude of 700km (435 miles).
The Sentinel carries a radar instrument that is able to sense the ground in all weathers, day and night.
It is routinely scanning this earthquake-prone region of the world, tracing the often very subtle changes in elevation at the Earth's surface.
Except, of course, the changes on Monday were not subtle at all; they were dramatic. The ground bent, buckled and in places ripped apart.
Researchers use the technique of interferometry to compare "before" and "after" views. But you do not really need to be an expert to see the consequences for Turkey in the latest Sentinel map.
https://www.bbc.com/news/science-environment-64603521 [ADAPTED]
Decide if the statement below are true (T) or false (F) according to the text. Then choose the option that contains the correct sequence.
( ) Most intense scientific researches haven’t been done for sensitive matters.
( ) There are precise figures about how many people are still trapped.
( ) The satellite Sentinel constantly analyses the ground over Turkey.
( ) Subtle changes in elevation at the Earth's surface in Turkey can not be easily noticed.
( ) Not only specialist but also common people are able to realize the changes on Turkey ground.