Imperial College London

Professor Gareth Collins

Faculty of EngineeringDepartment of Earth Science & Engineering

Professor of Planetary Science



+44 (0)20 7594 1518g.collins Website




4.83Royal School of MinesSouth Kensington Campus






BibTex format

author = {Daubar, I and Lognonné, P and Teanby, NA and Miljkovic, K and Stevanovi, J and Vaubaillon, J and Kenda, B and Kawamura, T and Clinton, J and Lucas, A and Drilleau, M and Yana, C and Collins, GS and Banfield, D and Golombek, M and Kedar, S and Schmerr, N and Garcia, R and Rodriguez, S and Gudkova, T and May, S and Banks, M and Maki, J and Sansom, E and Karakostas, F and Panning, M and Fuji, N and Wookey, J and van, Driel M and Lemmon, M and Ansan, V and Böse, M and Stähler, S and Kanamori, H and Richardson, J and Smrekar, S and Banerdt, WB},
doi = {10.1007/s11214-018-0562-x},
journal = {Space Science Reviews},
title = {Impact-seismic investigations of the InSight mission},
url = {},
volume = {214},
year = {2018}

RIS format (EndNote, RefMan)

AB - Impact investigations will be an important aspect of the InSight mission. One of the scientific goals of the mission is a measurement of the current impact rate at Mars. Impacts will additionally inform the major goal of investigating the interior structure of Mars. In this paper, we review the current state of knowledge about seismic signals from impacts on the Earth, Moon, and laboratory experiments. We describe the generalized physical models that can be used to explain these signals. A discussion of the appropriate source time function for impacts is presented, along with spectral characteristics including the cutoff frequency and its dependence on impact momentum. Estimates of the seismic efficiency (ratio between seismic and impact energies) vary widely. Our preferred value for the seismic efficiency at Mars is 5 × 10 − 4, which we recommend using until we can measure it during the InSight mission, when seismic moments are not used directly. Effects of the material properties at the impact point and at the seismometer location are considered. We also discuss the processes by which airbursts and acoustic waves emanate from bolides, and the feasibility of detecting such signals. We then consider the case of impacts on Mars. A review is given of the current knowledge of present-day cratering on Mars: the current impact rate, characteristics of those impactors such as velocity and directions, and the morphologies of the craters those impactors create. Several methods of scaling crater size to impact energy are presented. The Martian atmosphere, although thin, will cause fragmentation of impactors, with implications for the resulting seismic signals. We also benchmark several different seismic modeling codes to be used in analysis of impact detections, and those codes are used to explore the seismic amplitude of impact-induced signals as a function of distance from the impact site. We predict a measurement of the current impact flux will be possibl
AU - Daubar,I
AU - Lognonné,P
AU - Teanby,NA
AU - Miljkovic,K
AU - Stevanovi,J
AU - Vaubaillon,J
AU - Kenda,B
AU - Kawamura,T
AU - Clinton,J
AU - Lucas,A
AU - Drilleau,M
AU - Yana,C
AU - Collins,GS
AU - Banfield,D
AU - Golombek,M
AU - Kedar,S
AU - Schmerr,N
AU - Garcia,R
AU - Rodriguez,S
AU - Gudkova,T
AU - May,S
AU - Banks,M
AU - Maki,J
AU - Sansom,E
AU - Karakostas,F
AU - Panning,M
AU - Fuji,N
AU - Wookey,J
AU - van,Driel M
AU - Lemmon,M
AU - Ansan,V
AU - Böse,M
AU - Stähler,S
AU - Kanamori,H
AU - Richardson,J
AU - Smrekar,S
AU - Banerdt,WB
DO - 10.1007/s11214-018-0562-x
PY - 2018///
SN - 0038-6308
TI - Impact-seismic investigations of the InSight mission
T2 - Space Science Reviews
UR -
UR -
VL - 214
ER -