Visualization of Geotechnical Data for Hazard Mitigation and Disaster Response (2015) / Chapter Skim
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21 The following sections generally describe the state of the practice with respect to visualization of geotechnical data rather than the state of the art. It is evident from the study survey and interviews that the state of the practice encompasses a wide range of experience and tools.
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22 department, and that they use expert opinion, engineering judgment, and analysis to determine which instruments to use. A critical step in using geotechnical instruments is establishing warning and action levels for each instrument.
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23 More than 70% of the DOTs report having used GDV in the successful mitigation of unstable embankments and landslides; 50% to 55% of the DOTs have used it in the successful mitigation of settlement or heave hazards and rockfall hazards; and about 40% of the DOTs have used visualization in the successful mitigation of sinkhole hazards. Fewer DOTs have had to mitigate other geotechnical hazards, such as slope creep, debris flows, avalanches, and frost heave; but GDV has contributed to such efforts.
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24 than the current study would imply; however, that study survey targeted geospatial and "other relevant contacts" within the DOTs, whereas the current study survey targeted the DOT geotechnical leaders. It is reasonable to assume that a DOT's geotechnical staff may rely on other staff within the organization to provide a high level of visualization expertise.
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25 and especially geotechnical data, without some level of uncertainty. However, the inherent uncertainty in the data must be understood by the user and, preferably, be displayed in the visualization.
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