Mobile quantum gravity sensor with unprecedented stability
Paper i proceeding, 2016

Changes of surface gravity on Earth are of great interest in geodesy, earth sciences and natural resource exploration. They are indicative of Earth system's mass redistributions and vertical surface motion, and are usually measured with falling corner-cube- and superconducting gravimeters (FCCG and SCG). Here we report on absolute gravity measurements with a mobile quantum gravimeter based on atom interferometry. The measurements were conducted in Germany and Sweden over periods of several days with simultaneous SCG and FCCG comparisons. They show the best-reported performance of mobile atomic gravimeters to date with an accuracy of 39 nm/s^2, long-term stability of 0,5 nm/s^2 and short-term noise of 96 nm/s^2/(Hz)^1/2. These measurements highlight the unique properties of atomic sensors. The achieved level of performance in a transportable instrument enables new applications in geodesy and related Fields, such as continuous absolute gravity monitoring with a single instrument under rough environmental conditions.

Gravimetry

Metrology

Atom Interferometry

Frequency Standards

Författare

Christian Freier

Humboldt-Universität zu Berlin

Matthias Hauth

Humboldt-Universität zu Berlin

Vladimir Schkolnik

Humboldt-Universität zu Berlin

Bastian Keykauf

Humboldt-Universität zu Berlin

Manuel Schilling

Leibniz Universität Hannover

Hartmut Wziontek

Bundesamt für Kartographie und Geodäsie (BKG)

Hans-Georg Scherneck

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Chalmers, Rymd- och geovetenskap, Rymdgeodesi och geodynamik

Jürgen Müller

Leibniz Universität Hannover

Achim Peters

Humboldt-Universität zu Berlin

Journal of Physics: Conference Series

17426588 (ISSN) 17426596 (eISSN)

Vol. 723 Art. no. 012050- 012050

Ämneskategorier

Övrig annan teknik

Atom- och molekylfysik och optik

Geofysik

Fundament

Grundläggande vetenskaper

Infrastruktur

Onsala rymdobservatorium

DOI

10.1088/1742-6596/723/1/012050