Sauvons nos océans par Le Point - Dailymotion

Le Point

Scientifiques, décideurs, personnalités... s'engagement pour la sauvegarde des océans au One Ocean Science Congress à Nice, événement partenaire du « Point » précédant la Conférence des Nations Unies sur l’Océan (UNOC-3).

Transcript

00:00So how does it work when we send a satellite into space to look at the ocean?

00:04The process to build a spacecraft is quite long

00:07because it's a highly technical engineering feat.

00:10What we're after is cutting-edge instrumentation

00:13that allows us to look at the ocean

00:15and the ocean surface and what we have in the top 50 metres.

00:19That data is used to provide information to policy makers

00:23both in Europe and internationally

00:25to monitor the health of our ocean.

00:28This is important for our planet

00:30because the ocean covers 75% of our planet's surface.

00:34Few include the ice-infested regions.

00:36So when international agreements are ratified by governments

00:39there is a need to make sure we have an evidence base

00:43that not only provides the means to set the policy

00:46but also to monitor the policy when it's enacted

00:49and to take decisions on that policy

00:52if there are infringements to that policy.

00:54Space gives us access to quasi-instantaneous data

00:58over the entire global ocean

01:00which is unprecedented in detail

01:03and that is the evidence base that we use today

01:05to ensure that European and international policies are maintained.

01:10So for example, if a ship were to flush its tanks while at sea

01:14we can see that from space using synthetic aperture radar.

01:18We have a satellite called Sentinel-1

01:20which is part of the European Union Copernicus program.

01:23With this spacecraft we can see very clearly oil spills

01:26but not only that

01:28we can capture at the spacecraft

01:30the automated information system

01:32the AIS data

01:33which will identify the ship that's polluting.

01:36This is extremely important

01:38for the safeguarding of our seas

01:39and the protection of biodiversity.

01:41The ocean is in measurable decline.

01:44We need to take action to protect our oceans

01:47our one ocean

01:48because it is the lifeblood of our society.

01:51The phytoplankton and zooplankton

01:53that are living in the ocean

01:56form the base of the food chain.

01:58Without them there can be no life.

02:01No blue, no green.

Comment l'ESA surveille et protège les océans depuis l'espace

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Sauvons nos océans

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