GOCE Map This colorful new map traces the Earth's gravitational field. ESA

Using only two months of data, the GOCE gravity-tracking satellite has built the first-ever full map of Earth's gravitational field.

The map, called a geoid, reflects the bumps and valleys of Earth's gravitational effects. The map shows what the Earth would look like if it was covered in an ocean dictated by gravity, as the European Space Agency explains. It's not as smooth as you might think -- gravity is slightly different in different parts of the globe.

The GOCE satellite, which stands for Gravity field and steady-state Ocean Circulation Explorer, makes super-precise measurements of the gravitational field. It flies in a dangerously low polar orbit, coming close to falling out of the sky, BBC reports.

It carries three pairs of platinum blocks inside a gradiometer instrument, which can sense the smallest gravitational effects -- as wee as 1 part in 10,000,000,000,000 of the gravity experienced on Earth.

German researcher Reiner Rummel, chairman of the GOCE scientific consortium, explained to BBC that the satellite works much like a level.


"A geoid is nothing but a level that extends over the entire Earth," he says. "I can take two arbitrary points on the globe and decide which one is 'up' and which one is 'down.'"

The colorful map above is essentially a depiction of that effect, BBC reports. The map will help scientists better understand Earth's internal structure, ESA says. It will also help to accurately measure key climate change factors like ocean circulation, ice dynamics and sea-level change. It could help scientists better understand how ocean currents work, because gravity would have an impact regardless of temperature, tides or winds.

The map could also be used very much like a level -- it could help construction crews understand which way a fluid would naturally want to flow through a pipeline, for instance. It could even enlighten scientists about tectonic activity that causes earthquakes and volcanoes.

ESA's mission manager, Rune Floberghagen, said the GOCE data is providing better detail than ever on the Himalayas, central Africa, the Andes and Antarctica. It's not surprising -- it's hard to get detailed measurements in the middle of Antarctica because it's not exactly convenient to fly in and out of an airport there.

GOCE uses ion propulsion, so it has a limited lifespan before the very subject of its study will pull it out of the sky.

[BBC, ESA]

22 Comments

but how many wars will it stop? how many people will it feed? how will it help us reduce our dependance on fossil fuels?

and i just typoed like the village idiot...damn.

does it matter. its science. its interesting. its never been done before.

cGriffith, think of the butterfly effect, where one tiny change in the past can drastically affect the current time. This new data may not have a direct effect on the so called "important" things, but it might well affect something that does.

Ufos will stop to be Ufos, cause we´ll be friends of antigravity systems...

Everything is connected, Science is about understanding how things work, and can give answers even before we start to understand why we were needing those answers. If we were only concerned about the obvious and inmediate problems, we may be ignoring data which could prove useful to solve those problems in the first place and we would still be stuck on XVIII century.

Any thoughts on the relatively massive area to the SE of Greenland?

@Griffith - Just think of the giant wheel we could place at the edge a gravity differential well, it would turn with “free” gravitational energy – carbon free. Then again it could help us develop a gravity bomb that would suck the souls of enemies.

Are the places where there is "heavier" gravity indicative of heavier elements such as uranium and iron? If so it looks like off the coast of Europe and right above the barrier reef will have massive deposits!

If wrapped into a ball, gravity spot looks much like a particle spin to me. I don't understand, are all tose anomalies stable or can they change, like a sun spots, if internal heavy masses or atmospheric gases density change, that would be interesting.
Somehow earth must move trough vacuum and solar system gravity field, there must be differences due to orbits, but why is matter stable and separated in elements, combined in matter, if those pulses constantly change their properties. There must be other force at work and I suspect buoyancy, but than again, what is that natural order of things? It does and doesn't change with gravity, because difference in other forces can affect it.
There is another explanation, that Earth somehow transform, reduce entropy like we can and by regulating radiation of chemical reactions, adjusting pressure and change flow of electric forces.
That would change buoyancy relation between different masses, but why do they exist, if every particle is in it's own gravity field, isolated with distance? There must be a point, where some part is more behind in the past then other pieces of the whole, acting trough buoyancy, like it would take time to shape path for force, to compensate differences caused by gravity.
Problem is the light speed limit, because not all particles can react at the same time, energy must be reflected first for change to happen. But it would be possible, if particles would be connected trough past gravity events, entangled in groups, that can feel change instantly.
I thought about it looking at different pictures of the sun, when I isolated spectrum of elements, by selecting same color frequency, shapes of continent like clouds suddenly appeared, so buoyancy groups of elements are entangled at it's origin...
In other words, are we living on round and enclosed 3D object or is it an entangled maze of different layers, stretched trough time, looking like space?

Xspot writes like a caveman on acid who can use big words :P

I think that's actually an accomplishment.

I would have expected a gravitational band about the equator since the earth's shape is slightly fat from our rotation.

I wonder if they subtracted the distortion from the moon's gravitational field.

People in Papua New Guinea weigh more than anybody else on earth for the same mass. :)

A_Rock 06/30/10 at 1:02 am
I'm just interested, if gravity reference frame is changing, it must affect buoyancy, separation, distribution of matter and heat around the globe. Or is it quite the opposite, buoyancy can cause gravity anomalies? Also, time must flow slightly differently, so atomic watch should display one time inside gravity anomaly and another value few thousand miles away, traveling with moon, if that is the only reason for differences?
You're quite right, I'm forced to live like sort of a modern caveman. I'm still researching the origin of words, how to understand all this new revelations trough old words, what they really describing, how they came to be, what was the meaning of the first word, one human used for the first time and what was so important, he had to say to other people. The only acid in my organism is formed in my belly, by some proto-writing accomplishments here, I use different kind of motivation, induced and inspired with nature with questions like, what is all that and what are we.
I would like to read your comments, if you could see my cave drawings too! ;)

It is not heavier elements, but the shape of Earth (Geoid). Imagine this map in 3D, blue will be a deep whole, and the orange a protuberance. Earth is very far from being a sphere. Water fills the Geoid to give the close to sphere shape.

Wow. I want to jump into the mind of Xspot for a day.

Wooow What an Interesting information.

First thing that comes to my mind is ...Southern Part of India, Srilanka are the best place to launch Rockets to space exploration, as the impact of gravity is less ( fuel efficiency)

I am curious to know at what time frame these reading were taken.

I think the planetary movements ( moon, mars, other big planets) could contribute to the variations. If so, I think magnitude of gravity will change with time.

If it varies with time, the effect of gravity on rainfall, drought and environment can be studied.

We need more data to dig further..... excellent job dear Scientists. Hats off....

Ok,I see precisely what your on here Xspot! I think you may have come to the same question differently. I saw the whole confusing subject arise at the naming level. There is no root name for gravity - therefore after about 30 minutes of banging my head I decided that the best name for this image is a rhobarography - that is a picture of the density of pressure aka gravity... now isn't this what you are wondering too? From the Greek word(well my greek word) rhobaro, is density and pressure a cause or an effect of gravity?

Rho- the Greek symbol for density
Baro- the Greek root for pressure
Graphy- the Greek root for picture

As for the interpretation, the first thought was to imagine a 3-D model... the is no reason for the shape of gravity. Then the next thought was weather but is is all partially over land masses and the Pacific would have to be a calm little pond...

Hmm... back to that gravity/density question.... man this is a thinker!.....

I keep thinking that I see some orbital path patterns in that picture. I suspect that the moon's gravity is distorting the picture data.

"Gravity is the universal cryptic language of spacetime; a major player in unified field theory, and perhaps much more than we think.

It is speculated that Gravitational Waves may be found on earth in addition to outer space since humans generate them just like astral objects.

In fact, planets, thought, and matter of every shape and size distort spacetime – warping it with gravitational waves that vibrate – expanding or contracting the atmosphere and ionosphere through interaction. This is the Law of Attraction in Action."

EXCERPT from: Solar Plexus: The Secret Gravitational System
ISBN: 1456300474

[Courtesy of Whiffs of Bliss]

Gravity appears to be stronger in Indonesia, Iceland and Peru -- areas of high earthquake and volcanic activity.

Could gravity be the cause, or vice-versa?



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