Which surveys look into seismographic and earthquake disaster records?

• A. Environmental surveys
• B. Hydrological surveys
• C. Seismic surveys
• D. Topographic surveys

Answer: (C)

Seismic surveys focus on seismographic data and earthquake records. They involve collecting and analyzing information from seismographs and related instruments to track when and where earthquakes occur, how strongly the ground shakes, fault activity, and related hazards. This type of survey builds a history of seismic events, helps identify epicenters and magnitudes, and supports understanding past earthquakes to assess future risk and inform building codes and preparedness.

Environmental surveys look at ecosystems, pollution, land use, and natural resources, which isn’t about earthquake data. Hydrological surveys study water-related aspects like rivers, groundwater, and floods, not seismographic records. Topographic surveys map the surface shape and features of the land, focusing on elevations and terrain rather than earthquake data.