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  • JOURNAL ARTICLE
    Jourdan F, Timms NE, Eroglu E, Mayers C, Free A, Bland PA, Collins G, Davison T, Abe M, Yada Tet al.,

    Collisional history of asteroid Itokawa

    , Geology, ISSN: 1943-2682
  • CONFERENCE PAPER
    Shah J, Muxworthy AR, Almeida T, Kovacs A, Russell SS, Genge M, Dunin-Borkowski REet al.,

    Electron Holography of Chondrule Dusty Olivine (poster)

    , Meteorites and Solar System formation workshop
  • JOURNAL ARTICLE
    Collins GS, 2017,

    Moon formation: Punch combo or knock-out blow?

    , Nature Geoscience, Vol: 10, Pages: 72-73, ISSN: 1752-0894
  • JOURNAL ARTICLE
    Collins GS, Lynch E, Mcadam R, Davison TMet al., 2017,

    A numerical assessment of simple airblast models of impact airbursts

    , Meteoritics and Planetary Science, ISSN: 1086-9379

    © 2017 The Meteoritical Society.Asteroids and comets 10-100 m in size that collide with Earth disrupt dramatically in the atmosphere with an explosive transfer of energy, caused by extreme air drag. Such airbursts produce a strong blastwave that radiates from the meteoroid's trajectory and can cause damage on the surface. An established technique for predicting airburst blastwave damage is to treat the airburst as a static source of energy and to extrapolate empirical results of nuclear explosion tests using an energy-based scaling approach. Here we compare this approach to two more complex models using the iSALE shock physics code. We consider a moving-source airburst model where the meteoroid's energy is partitioned as two-thirds internal energy and one-third kinetic energy at the burst altitude, and a model in which energy is deposited into the atmosphere along the meteoroid's trajectory based on the pancake model of meteoroid disruption. To justify use of the pancake model, we show that it provides a good fit to the inferred energy release of the 2013 Chelyabinsk fireball. Predicted overpressures from all three models are broadly consistent at radial distances from ground zero that exceed three times the burst height. At smaller radial distances, the moving-source model predicts overpressures two times greater than the static-source model, whereas the cylindrical line-source model based on the pancake model predicts overpressures two times lower than the static-source model. Given other uncertainties associated with airblast damage predictions, the static-source approach provides an adequate approximation of the azimuthally averaged airblast for probabilistic hazard assessment.

  • JOURNAL ARTICLE
    Forman LV, Bland PA, Timms NE, Daly L, Benedix GK, Trimby PW, Collins GS, Davison TMet al., 2017,

    Defining the mechanism for compaction of the CV chondrite parent body

    , Geology, Pages: G38864.1-G38864.1, ISSN: 0091-7613
  • JOURNAL ARTICLE
    Johnson BC, Blair DM, Collins GS, Melosh HJ, Freed AM, Taylor GJ, Head JW, Wieczorek MA, Andrews-Hanna JC, Nimmo F, Keane JT, Miljkovic K, Soderblom JM, Zuber MTet al., 2016,

    Formation of the Orientale lunar multiring basin

    , SCIENCE, Vol: 354, Pages: 441-444, ISSN: 0036-8075
  • JOURNAL ARTICLE
    Kring DA, Kramer GY, Collins GS, Potter RWK, Chandnani Met al., 2016,

    Peak-ring structure and kinematics from a multi-disciplinary study of the Schrodinger impact basin

    , NATURE COMMUNICATIONS, Vol: 7, ISSN: 2041-1723
  • JOURNAL ARTICLE
    Morgan JV, Gulick SPS, Bralower T, Chenot E, Christeson G, Claeys P, Cockell CS, Collins GS, Coolen MJL, Ferriere L, Gebhardt C, Goto K, Jones H, Kring DA, Le Ber E, Lofi J, Long X, Lowery C, Mellett C, Ocampo-Torres R, Osinski GR, Perez-Cruz L, Pickersgill A, Poelchau M, Rae A, Rasmussen C, Rebolledo-Vieyra M, Riller U, Sato H, Schmitt DR, Smit J, Tikoo S, Tomioka N, Urrutia-Fucugauchi J, Whalen M, Wittmann A, Yamaguchi KE, Zylberman Wet al., 2016,

    The formation of peak rings in large impact craters

    , SCIENCE, Vol: 354, Pages: 878-882, ISSN: 0036-8075
  • CONFERENCE PAPER
    Penny C, Muxworthy AR, Fabian K, 2016,

    The Curie temperature of magnetite nanoparticles (poster)

    , 15th Castle Meeting
  • CONFERENCE PAPER
    Penny C, Muxworthy AR, Fabian K, 2016,

    The Curie temperature of magnetite nanoparticles (poster)

    , EMRS Fall 2016
  • CONFERENCE PAPER
    Shah J, Bates H, Muxworthy AR, Russell SS, Genge MJet al., 2016,

    A micro-CT conglomerate test (poster)

    , 15th Castle Meeting
  • CONFERENCE PAPER
    Shah J, Muxworthy AR, Almeida T, Kovacs A, Russell SS, Genge M, Dunin-Borkowski Ret al., 2016,

    Hot Holography: Magnetic recording fidelity of dusty olivine (poster)

    , 13th UK Planetary Forum Early Career Scientists’ Meeting
  • CONFERENCE PAPER
    Shah J, Muxworthy AR, Almeida TP, Kovacs A, Russell SS, Genge M, Dunin-Borkowski Ret al., 2016,

    In-situ heating holography of chondrule dusty olivine

    , Magnetic Interactions
  • CONFERENCE PAPER
    Shah J, Muxworthy AR, Almeida TP, Kovacs A, Russell SS, Genge M, Williams W, Dunin-Borkowski REet al., 2016,

    Determining the magnetic recording fidelity of chondrule dusty olivine

    , 15th Castle Meeting
  • JOURNAL ARTICLE
    Abubakar R, Muxworthy AR, Sephton MA, Southern P, Watson JS, Fraser AJ, Almeida TPet al., 2015,

    Formation of magnetic minerals at hydrocarbon-generation conditions

    , MARINE AND PETROLEUM GEOLOGY, Vol: 68, Pages: 509-519, ISSN: 0264-8172
  • JOURNAL ARTICLE
    Jacobs CT, Goldin TJ, Collins GS, Piggott MD, Kramer SC, Melosh HJ, Wilson CRG, Allison PAet al., 2015,

    An improved quantitative measure of the tendency for volcanic ash plumes to form in water: implications for the deposition of marine ash beds

    , JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, Vol: 290, Pages: 114-124, ISSN: 0377-0273
  • JOURNAL ARTICLE
    Miljkovic K, Wieczorek MA, Collins GS, Solomon SC, Smith DE, Zuber MTet al., 2015,

    Excavation of the lunar mantle by basin-forming impact events on the Moon

    , EARTH AND PLANETARY SCIENCE LETTERS, Vol: 409, Pages: 243-251, ISSN: 0012-821X
  • CONFERENCE PAPER
    Montgomery W, Sephton MA, Watson JS, Zeng Het al., 2015,

    The Effects of Minerals on Heavy-Oil and Bitumen Chemistry When Recovered by Steam-Assisted Methods

    , Publisher: SPE-SOC PETROLEUM ENGINEERS, CANADA, Pages: 15-17, ISSN: 0021-9487
  • CONFERENCE PAPER
    Muxworthy AR, Bland PA, Collins G, Moore Jet al., 2015,

    MAGNETIC FABRICS IN ALLENDE: IMPLICATIONS FOR MAGNETIC REMANENCE ACQUISITION.

    , 78th Annual Meeting of the Meteoritical-Society, Publisher: WILEY-BLACKWELL, ISSN: 1086-9379
  • CONFERENCE PAPER
    Muxworthy AR, Heslop D, 2015,

    Recovering Ancient Magnetic Field Intensities From Rocks Using FORC Measurements (poster)

    , HMM2015

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