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Large zone of missing first arrivals at ranges of less than 20 km (shots 3100-3130). LVZ. Appears to break into two small segments. Brighter spot on low side of shadow zone. Possible reappearence of first arrival for short period in the middle of the shadow zone. (shots 3170-3180) There is also an X-like tail behind high side of the LVZ arrival. PmP seen near shot 3100-3130 even without lp filter. With bpf:2-16 low shots peter out by 3037 and reappear at 3092. Nearly same limits with other filters. Beyond bump at 3175 noise level jumps up (?) Is there a correlation??? |