It is a crucial cheap moncler coats reference for conducting

admin on 28 de Abril de 2014

How Low Can It Go

moncler outlet sale Caption: cheap moncler sale GOCE over ice. Credits: ESA AOES Medialab moncler outlet sale

cheap moncler outlet Since March cheap moncler 2009, the European Space Agency (ESA) mission, Gravity field and steady state Ocean Circulation Explorer (GOCE) has moncler outlet sale been orbiting Earth. It carries highly sensitive instrumentation able to detect tiny variations in the pull of gravity across the surface of the planet, allowing it to map our planet’s gravity with unrivaled precision, producing the most accurate gravity map of Earth. With the planned mission UK Moncler black friday completed, the fuel consumption has been much lower than anticipated, enabling ESA to extend GOCE’s life and put it into an even lower orbit, improving the quality of the gravity model. cheap moncler outlet

cheap moncler coats The GOCE spacecraft was moncler sale outlet designed to fly low and has spent most of its mission roughly 500km below most moncler sale other Earth observing missions, at an altitude of 255km. ESA’s Earth Scientific Advisory Committee recommended lowering the orbit by 20km at monlcer down jackets a rate of about 300m per day, starting in August. After coming down by 8.6 km, the cheap moncler jackets satellite’s performance and orbit were assessed. Now, GOCE is again being lowered while continuing its gravity moncler mens jackets mapping. It is expected to reach 235 km by February. cheap moncler coats

moncler sale outlet Decreasing the altitude increases the spatial resolution and the precision of the data. The expected increase in data quality is so high (possibly 35%) that scientists are calling it GOCE’s ‘second mission. Volker Liebig, ESA’s Director of Earth Observation moncler outlet store Programmes has said “What the team of ESA engineers is cheap moncler outlet now doing has not been done before and it poses a challenge. But it will also trigger new research in the field of gravity based on the high resolution moncler outlet data we are expecting.” moncler sale outlet

moncler jacket sale Caption: The image on the left shows GOCE’s gravity measurements over northern Europe, acquired from its previous altitude. The image on the right depicts moncler outlet online the expected measurements over the same area after the satellite has been lowered. Credits: ESA / GOCE+ Theme 2 moncler jacket sale

moncler outlet The first ‘geoid’ based on GOCE’s gravity measurements was unveiled in June 2010. It is a crucial cheap moncler coats reference for conducting precise measurements of ocean circulation, sea level change and ice dynamics. The mission has also been studying air density and wind in space, and its data was recently used to produce the first global high resolution map of the boundary between Earth’s crust and mantle, called the Mohorovicic, or discontinuity. moncler outlet

cheap moncler As the orbit drops, atmospheric drag increasingly pulls the satellite towards Earth, so GOCE has to use the tiny thrust of its ion engine to continuously compensate for any drag to stay aloft and maintain the stability it needs to measure Earth gravity. GOCE buy moncler jackets has enough xenon fuel for another 50 weeks of operations. When the fuel runs out the satellite will be pulled into the deep atmosphere where it will burn up cheap moncler.

Deixe uma resposta

O seu endereço de email não será publicado. Campos obrigatórios marcados com *