quake                  package:Rlab                  R Documentation

_E_a_r_t_h_q_u_a_k_e _s_t_r_e_n_g_t_h_s _a_n_d _l_o_c_a_t_i_o_n_s

_D_e_s_c_r_i_p_t_i_o_n:

     The data set 'quake' contains the strengths of earthquakes
     measured at the earth's continental plates. Much of the earth's
     seismic activity is due to motion of the large plates that make up
     the crust of the earth. Earthquakes occur when a buildup in
     tension between two layers of rock is suddenly released. For this
     reason many earthquakes occur at plate boundaries.

_F_o_r_m_a_t:

     A data frame with 496 observations on the following 5 variables.

     _l_a_t : latitude of the event

     _l_o_n : longitude of the event

     _d_i_r_e_c_t_i_o_n : direction of earthquake

     _s_t_r_e_n_g_t_h : strength of the earthquake (Richter scale)

     _p_l_a_t_e_i_d : numerical code for plate boundary

