Name: 宇宙から見た地球天津 (Earth from Space: Tianjin)
Uploaded: 2021-01-14T05:39:32.000Z
Duration: 3 min 8 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

The Chinese city of Tianjin is captured in this Sentinel-1A radar image

created by combining three scans over several months.

The city sits to the west of the Bohai Bay

within the Bohai Gulf, off of the Yellow Sea.

With a population of over 14 million people,

this megacity is among China’s five largest.

Urban areas are home to over half of the world’s population,

As more people move from rural areas to cities,

this growth needs to be monitored to help it proceed on a sustainable basis.

High-resolution satellite data provide essential information for city planning

and for the sustainable development of urban regions.

Radar in particular can be used to monitor slight ground movements down to a few millimetres

– valuable information for urban planners

we can see different colours in the geometric agricultural fields,

showing changes between the three acquisitions that make up this image.

In this area, the black shapes show divided areas covered in water,

Bohai Bay was traditionally home to the country’s richest fisheries,

but pollution, overfishing and land reclamation has diminished this economic activity.

Farther south, we can see numerous dots in the water

– radar reflections from the boats coming to and from the Port of Tianjin.

This massive maritime gateway handles hundreds of millions of tonnes of cargo each year,

the black and bright green areas are water reservoirs.

will be used to support the sustainable management of water resources

by providing measurements of water quality and detecting changes.

And that brings us to the end of this edition of Earth from Space.

Remember that we broadcast online every Friday at ten o'clock Central European Summer Time.

Watch us on our website or through the ESA App on your mobile device.

From the ESA Web TV studios, have a nice day.