Our Ref.: HKO 220/172/22


                                                                         24 February 2020


Sir/Madam,


                           Preliminary Seismological Analysis


        Enclosed please find the preliminary seismological analysis from April to June 2019
for the station HKPS. Please note that Broadband records include all 3 components.




                                                            Yours faithfully,




                                                             ( Mr. T.W. Hui )
                                               for Director of the Hong Kong Observatory
     Preliminary Analysis of the Seismograph at HKPS for Apr 2019

  Date      phase   Component    Time (UTC)    Δ*        Remarks
                                  HHMMSS
Year 2019
 1 - Apr     Nil
 2 - Apr     Nil
 3 - Apr     Nil
 4 - Apr     Nil
 5 - Apr     Nil
 6 - Apr     P        ENZ          220034              Compr to SE
 7 - Apr     Nil
 8 - Apr     Nil
 9 - Apr     Nil
 10 - Apr    Nil
 11 - Apr    P          Z          082434              Compr
 12 - Apr    Nil
 13 - Apr    Nil
 14 - Apr    Nil
 15 - Apr    Nil
 16 - Apr    Nil
 17 - Apr    Nil
 18 - Apr    P        ENZ          050250              Compr to NE
 19 - Apr    Nil
 20 - Apr    Nil
 21 - Apr    Nil
 22 - Apr    P        ENZ          091325              Compr to SE
 23 - Apr    P        ENZ          054120              Compr to SE
             P        ENZ          202008              Compr to NW
 24 - Apr    Nil
 25 - Apr    Nil
 26 - Apr    Nil
 27 - Apr    Nil
 28 - Apr    Nil
 29 - Apr    P         EZ          142926              Compr to E
 30 - Apr    Nil
     Preliminary Analysis of the Seismograph at HKPS for May 2019

  Date      phase   Component    Time (UTC)    Δ*        Remarks
                                  HHMMSS
Year 2019
  1 - May    Nil
  2 - May    Nil
  3 - May    Nil
  4 - May    Nil
  5 - May    Nil
  6 - May    P         ENZ         212725              Compr to SE
  7 - May    Nil
  8 - May    Nil
  9 - May    P         ENZ         235254              Compr to SW
 10 - May    Nil
 11 - May    Nil
 12 - May    Nil
 13 - May    Nil
 14 - May    P         ENZ         130650              Compr to SE
 15 - May    Nil
 16 - May    Nil
 17 - May    Nil
 18 - May    Nil
 19 - May    Nil
 20 - May    Nil
 21 - May    Nil
 22 - May    Nil
 23 - May    Nil
 24 - May    Nil
 25 - May    Nil
 26 - May    Nil
 27 - May    Nil
 28 - May    Nil
 29 - May    Nil
 30 - May    P          Z          154955              dilat
 31 - May    Nil
     Preliminary Analysis of the Seismograph at HKPS for Jun 2019

  Date      phase   Component    Time (UTC)    Δ*        Remarks
                                  HHMMSS
Year 2019
 1 - Jun     Nil
 2 - Jun     Nil
 3 - Jun     Nil
 4 - Jun     P        ENZ          044353              Compr to NE
 5 - Jun     Nil
 6 - Jun     Nil
 7 - Jun     Nil
 8 - Jun     Nil
 9 - Jun     Nil
 10 - Jun    Nil
 11 - Jun    Nil
 12 - Jun    Nil
 13 - Jun    Nil
 14 - Jun    Nil
 15 - Jun    P        ENZ          230728              Compr to NW
 16 - Jun    Nil
 17 - Jun    Nil
 18 - Jun    P        ENZ          132804              Compr to SW
 19 - Jun    P        ENZ          071415              Compr to NW
             P        ENZ          173137              Compr to SE
 20 - Jun    Nil
 21 - Jun    Nil
 22 - Jun    Nil
 23 - Jun    Nil
 24 - Jun    Nil
 25 - Jun    Nil
 26 - Jun    Nil
 27 - Jun    Nil
 28 - Jun    P        ENZ          155651              Compr to SE
 29 - Jun    Nil
 30 - Jun    Nil