1National Institute of Information and Communications Technology, Tokyo, Japan
2Luleå University of Technology, Kiruna, Sweden
3Chalmers University of Technology, Gothenburg, Sweden
4University of Hamburg, Hamburg, Germany
5Lancaster University, Lancaster, UK
6University of Colorado, Boulder, USA
7Max Planck Institute for Solar System Research, Göttingen, Germany
Received: 19 Apr 2016 – Discussion started: 30 Aug 2016
Abstract. A Mars-orbiting sub-millimeter sensor can be used to retrieve the magnetic field at low altitudes over large areas of significant planetary crustal magnetism of the surface of Mars from measurements of circularly polarized radiation emitted by the 368 GHz ground-state molecular oxygen absorption line. We design a full retrieval system for one example orbit to show the expected accuracies on the magnetic field components that one realization of such a Mars satellite mission could achieve. For one set of measurements around a tangent profile, we find that the two horizontal components of the magnetic field can be measured at about 200 nT error with a vertical resolution of around 4 km from 6 up to 70 km in tangent altitude. The error is similar regardless of the true strength of the magnetic field, and it can be reduced by repeated measurements over the same area. The method and some of its potential pitfalls are described and discussed.
Revised: 05 Dec 2016 – Accepted: 18 Dec 2016 – Published: 27 Jan 2017
Larsson, R., Milz, M., Eriksson, P., Mendrok, J., Kasai, Y., Buehler, S. A., Diéval, C., Brain, D., and Hartogh, P.: Martian magnetism with orbiting sub-millimeter sensor: simulated retrieval system, Geosci. Instrum. Method. Data Syst., 6, 27-37, doi:10.5194/gi-6-27-2017, 2017.