The discussion centers on the representation of "bubbles" on the USGS earthquake map, specifically regarding their significance in indicating earthquake magnitudes. Each bubble corresponds to earthquakes of magnitude 4.5 and above that have occurred from 1900 to 2015. The size of the bubble reflects the magnitude range of the earthquakes, with larger bubbles indicating more significant seismic events. The conversation highlights the importance of understanding these visual cues for interpreting seismic activity over time.
PREREQUISITESSeismologists, geologists, emergency management professionals, and anyone interested in understanding earthquake data and its implications for public safety and geological research.
lots and lots of quakes over the last x number of years, size of the dot represents magnitude range ... It may say how many years ... let me go lookscottdave said:
