Vs30 Structure of Almeria City (SE Spain) Using SPAC and MASW Methods and Proxy Correlations

The topographic slope method is an innovative, fast and very low-cost technique for estimating the average S-wave velocity in upper 30 m (Vs30) based on relationship between this quantity of ground, obtained using a Digital Elevation Model (DEM). good linear correlations log(Vs30)–log(slope) found experimentally, which, ideally, should be determined each region. If measured Vs30 data are not available to carry out fitting study area, from other areas could used, although reliability estimated results would lower. In article, observations made city Almeria, Spatial Autocorrelation Surveys (SPAC) Multichannel Analysis Surface Waves (MASW), obtaining two types fitting: (a) log(Vs30)–log(slope); (b) considering additional dependence geological units. reliability, evaluated by Multiple R-Squared (MRS), varies 79.2% first case 87.0% second, lowering mean absolute values residuals at observation points 40.0 m/s 29.0 m/s. Using more generic correlation world, increase 74.7