12. Surface wave radiation

38. Larsen et al. (2009) EOS 2008 eruption of Okmok

39. strong tremor OKWE RSAM 7/137/207/278/038/108/17 amplitude (arb. units) Okmok eruption seismicity

40. VLP tremor during Okmok eruption VLP tremor has been previously reported by De Lauro et al. (2005) at Stromboli

41. Stations used for tremor analysis

42. Comparison of Amplitude Spectra

43. OKSOz-OKFGz inter-station times

44. Histograms of 10 inter-station times

45. Tremor located NNW of Cone D Haney (2010) JGR, in press

46. new coneCone D caldera rim northsouth

47. Similar phase velocity for Love waves, so a similar inter-station time expected

48. Horizontal components Not similar to ZZ or RR Sign flip on OKFGt

51. Radiation pattern for a vertical CLVD Azimuth constrained by Love waves, source depth by Rayleigh waves

52. Rayleigh radiation: VLP tremor depth

53. approx. edge of caldera Masterlark, Haney, et al. (2010) JGR Ambient noise tomography of Okmok

54. Radiation pattern for a vertical CLVD Haney (2010) JGR, in press