1. A computerized method for detecting changes in events, comprising the steps of: establishing and storing an original geospatial signature for a given event type based on a determined likelihood associating the event type's relative proximity to a variable of interest (VOI) within a geospatial area of interest (AOI); receiving geospatial information pertaining to one or more subsequent events of the given event type within the AOI, including location information for the one or more subsequent events; classifying the received information as part of the original signature or as an outlier; and upon the received information meeting or exceeding a pre-determined threshold for classification as an outlier, establishing and storing a reassessed signature for the given event type.