Seismometer tested for use on the Moon and Mars

Aug 24, 2012
Seismometer Tested for Use on the Moon and Mars
VBB seismometers, such as this prototype, are tested at the Black Forest Observatory for use on the moon and mars. Photo: Rudolf Widmer-Schnidrig

(Phys.org)—Time and again, local quakes occur on the moon. Knowledge of their origin and intensity is required for the safe construction of moon bases for astronauts or for drawing conclusions with respect to the inner structure of the moon. To study moonquakes and the effects of gravitation accelerations, a set of several seismometers is planned to be installed on the surface of the moon during the SELENE2 Japanese moon mission.

The key component of this geophysical mission is a new very broad-band (VBB) seismometer developed by scientists of the Institut de Physique du Globe (IPGP), Paris, in cooperation with ETH Zurich and the Max Planck Institute for Solar System Research. The VBB seismometer is to cover the complete signal spectrum from highly frequent local moonquakes to gravitation accelerations of the earth and moon. In addition, three short-period seismometers of the Japanese Aerospace Exploration Agency (JAXA) will be used to measure highly frequent quakes in all three spatial directions. The VBB seismometer will also be applied on the Mars during the Insight mission of the American Space Agency NASA. The astronauts will use the devices to observe marsquakes, response accelerations of the planet possibly caused by quakes or turbulences in the , and the gravity effect of the Mars satellite Phobos.

Until Friday, July 20, constructors of the SELENE2 mission (IPGP, JAXA, MPS) will test the moon seismometers at the Black Forest Joint Observatory (BFO), a facility of KIT and Stuttgart University. "Test conditions at BFO are unique worldwide," says KIT scientist and BFO employee Dr. Thomas Forbriger. Due to its remote location in a closed mine, the observatory is one of the calmest stations of the global seismological network, which is hardly influenced by disturbances. "Moreover, the BFO, with its instruments that have been operated for a long time already, defines the sensitivity that can be achieved for seismic measurements on earth. The BFO instruments are considered the standard for all newly developed measurement instruments worldwide." On Tuesday, July 17, and Wednesday, July 18, the will be installed in a vacuum chamber to simulate conditions on the moon and test the devices for their suitability.

The SELENE2 mission is planned to follow geophysical studies under the APOLLO program: Between 1969 and 1972, astronauts installed a seismometer network on the in order to detect quakes. According to the results, there are four different types of moonquakes: Quakes at around 700 km below the moon surface, effects of comet or asteroid impacts, eruptions caused by rapid heating of the surface, and moonquakes 20 to 30 kilometers below the moon surface.

As the VBB seismometer possesses a much higher sensitivity than the instruments used during the APOLLO mission, scientists hope to gain new insights into the inner structure of the moon and the Mars, which may help determine the size and composition of the moon or Mars core or the detailed mantle structure.

Explore further: Computer model shows moon's core surrounded by liquid and it's caused by Earth's gravity

add to favorites email to friend print save as pdf

Related Stories

Europe's plans to visit the Moon in 2018

Jul 27, 2012

The European Space Agency is aiming for the Moon with their Lunar Lander mission, anticipated to arrive on the lunar surface in 2018. Although ESA successfully put a lander on the surface of Titan with the ...

Fantastic Phobos

Aug 21, 2012

(Phys.org) -- Some 135 years after its discovery, Mars’ largest moon Phobos is seen in fantastic detail – and in 3D – in an image taken by ESA’s Mars Express spacecraft as it passed just ...

Japan's first lunar probe ends mission

Jun 11, 2009

(AP) -- Japan's first lunar probe made a controlled crash landing on the moon Thursday, successfully completing a 19-month mission to study the Earth's nearest neighbor, Japan's space agency said.

Mars Express to rendezvous with Martian moon

Jul 16, 2008

(PhysOrg.com) -- Scientists and engineers are preparing ESA’s Mars Express for a pair of close fly-bys of the Martian moon Phobos. Passing within 100 km of the surface, Mars Express will conduct some of ...

Recommended for you

Image: NASA's SDO observes a lunar transit

9 hours ago

On July 26, 2014, from 10:57 a.m. to 11:42 a.m. EDT, the moon crossed between NASA's Solar Dynamics Observatory and the sun, a phenomenon called a lunar transit.

Image: Tethys in sunlight

9 hours ago

Tethys, like many moons in the solar system, keeps one face pointed towards the planet around which it orbits. Tethys' anti-Saturn face is seen here, fully illuminated, basking in sunlight. On the right side ...

User comments : 0