Механика очага землятресения. Спецкурс. Воронина Е.В. - 72 стр.

70

        < j_Zevguo mkeh\byo G \hajZklZ_l k m\_ebq_gb_f ^ebgu lj_sbgu
lZd dZd klZlbq_kdbc dhwnnbpb_gl bgl_gkb\ghklb \hajZklZ_l ^ey [hevrbo
lj_sbg Ke_^h\Zl_evgh \hajZklZ_l b h[t_f V b h[eZklv aZgylZy fbdjh
lj_sbgZfb b ieZklbq_kdhc ^_nhjfZpb_c WlZ h[eZklv [m^_l ihlj_[eylv
wg_j]bx ijb\h^y d m\_ebq_gbx agZq_gby G ^ey kbevguo a_fe_ljyk_gbc
H[uqgh G = 108 wj]kf2 qlh gZ g_kdhevdh ihjy^dh\ [hevr_ l_hj_lbq_kdhc
\_ebqbgu
        Nbabq_kdZy ijbjh^Z kbe kp_ie_gby klZg_l ykghc _keb aZibr_f
                        σ yz ( x′,0 ) = σ yz d + σc ε ( x′ ) ijb x ≤ 0 .

A^_kv ε ( x′) — ieZklbq_kdZy ^_nhjfZpby \ fZl_jbZe_ aZihegyxs_f lj_
sbgm ?keb rbjbgZ lj_sbgu jZ\gZ b lh wd\b\Ze_glguc wlhc ^_nhjfZpbb
kdZq_d kf_s_gbc [m^_l ∆w = bε .
        GZ ^hklZlhqgh [hevrbo ih kjZ\g_gbx k jZaf_jZfb dhgp_\hc ahgu
jZkklhygbyo hl dhgpZ lj_sbgu kbeu kp_ie_gby g_ [m^ml \ebylv gZ nmgd
pbx ih^\b`db dhlhjZy [m^_l hij_^_eylvky fZdjhkdhibq_kdbfb iZjZf_l
jZfb lZdbfb dZd nhjfZ ^ebgZ b \_ebqbgZ k[jhr_gguo gZijy`_gbc
        JZg__ fu hij_^_ebeb k[jhr_ggu_ gZijy`_gby dZd nmgdpbx
σ yz 0 − σ yz d  K mq_lhf kbe kp_ie_gby hgh [m^_l jZ\gh σ yz 0 − σ yz d − σc b agZ
qbl \ebygb_ kbe kp_ie_gby m\_ebqb\Z_l dhgp_gljZpbx gZijy`_gbc
      ;:JV?JG:Y FH>?EV HQ:=:
      >\b`_gb_ dhgqbdZ lj_sbgu fh`_l [ulv hklZgh\e_gh ba-aZ gZebqby
\ iehkdhklb jZaju\Z [Zjv_jZ \ukhdhc ih\_joghklghc wg_j]bb
      Ijhkl_crbc djbl_jbc jZajmr_gby k\h^blky d aZ^Zgbx jZaghklb gZ
ijy`_gbc \ ^\mo lhqdZo jZkiheh`_gguo ih jZagu_ klhjhgu hl jZaju\Z
GZijy`_gb_ \ lhqd_ jZkiheh`_gghc \gmljb lj_sbgu jZ\gh σ yz d  \g_
lj_sbgu — σ yz 0 − τ yz  DZd lhevdh jZaghklv gZijy`_gbc ij_\ukbl g_dhlh
jh_ ij_^_evgh_ agZq_gb_ Sc , τ yz − σ yz d + σ yz 0 ≥ Sc h[jZam_lky jZaju\ b
dhgqbd lj_sbgu k^\b]Z_lky \i_j_^ hlghkbl_evgh k\h_]h i_j\hgZqZevgh]h
iheh`_gby < khhl\_lkl\b_ k djbl_jb_f Bj\bgZ
                                           Kc
                                  Sc = 2       .
                                           2πd
     JZaghklv f_`^m jZ[hlhc g_mijm]bo kbe gZ njhgl_ jZajmr_gby b jZ
[hlhc ih ij_h^he_gbx kbe ^bgZfbq_kdh]h lj_gby hij_^_ey_l m^_evgmx
ih\_joghklgmx wg_j]bx