A Review of the Advantages and Limitations of Geophysical Investigations in Landslide Studies

Figure 1

For each landslide typology (“soil” in red, “rock” in green, and total in blue), the bar graph shows the number of papers focused on just one technique or on more than one. Numbers on the top of the bars are the percentage values with respect to the total number of analysed papers. The darker colours of the “soil” and “rock” bars of the “one-technique” group indicate in how many works the passive seismic technique was employed alone. The dark blue portion of the “one-technique total bar” indicates in how many works other nongeophysical techniques were employed.