<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=US-ASCII"> <META content="MSHTML 6.00.2900.2912" name=GENERATOR></HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial" bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7><FONT id=role_document face=Arial color=#000000 size=2> <DIV>Happy first day of summer. The van tour that I thought I'd have was driven by somebody else. That's fine.</DIV> <DIV> </DIV> <DIV>Question: Who, and how often, and what (if any) relationship to Giant -- solo eruptions by Grotto Fountain?</DIV> <DIV> </DIV> <DIV>Today upon arrival I directly headed out to Grotto-Giant. The following is the interesting timeline:</DIV> <DIV> </DIV> <DIV>0826 Giant hot period, duration 4m 43s. Quite a lot of water was discharged, but Mastiff was mostly flat throughout.</DIV> <DIV>0929 Grotto Fountain (on the second Indicator Spring fill I saw). Duration was 22 minutes. South Grotto Fountain played during the first 3 or 4 minutes of G.F., then it quit. Throughout the 22 minutes, Grotto and Rocket grumbled a lot, but no water was ever visible in either until the very end of G.F., when there were a few very small splashes in Rocket. Both fell very quiet when G.F. quit.</DIV> <DIV>0942 (during Grotto Fountain), Oblong.</DIV> <DIV>0947ie (during Grotto Fountain) Giant hot period. Duration was about 4 minutes probably, and again Mastiff was mostly flat. There was some vertical surging in Giant, but nothing to get excited about.</DIV> <DIV>(at this point, I left the area for a short while)</DIV> <DIV>1106 first observed South Grotto Fountain, independent of anything else, duration about 3 minutes. This was a _very_ strong eruption, some jets easily 15 feet high.</DIV> <DIV>1113 South Grotto Fountain, weaker, duration about 1 minute.</DIV> <DIV>1115 Startling, duration about 2 minutes</DIV> <DIV>(maybe more events, but then I was over at Giant)</DIV> <DIV>1136 Giant hot period, duration 3m 15s. This was much weaker (no Feather Satellite) than the previous two hot periods. Steve Robinson arrived during it.</DIV> <DIV>1148 Grotto Fountain, I = 2h 21m, D = 26 minutes. This time, after much sloshing:</DIV> <DIV>1159 Grotto</DIV> <DIV>1313 Giant hot period, duration a whopping 1m 38s, Feather and SW Vents only and little or no overflow from Mastiff, as called by Steve.</DIV> <DIV> </DIV> <DIV>Other stuff:</DIV> <DIV>Plume had intervals of 60, 56, 68, --, and 65 minutes.</DIV> <DIV>Beehive erupted at 1125, for an interval of 27h 24m. Indicator of 14 minutes.</DIV> <DIV>Castle had a minor at 1044. As we've been seeing with increasing frequency, this minor had a long duration, nearly 11 minutes. A previous example produced a minor interval of about 11 1/2 hours.</DIV> <DIV>Grand, was from 0645E to 1344, interval 6h 59m, T1Q.</DIV> <DIV>Daisy was at 0820, 1134 (I = 3h 14m), and 1405ie (I ~ 2h 28m).</DIV> <DIV>Finally, Riverside was 0714ie, then 1342, so I ~ 6 1/2 hours.</DIV> <DIV> </DIV> <DIV>Miscellany:</DIV> <DIV>Tardy cycles were in progress when I left. There had been at least two of them, and Penta was just a bit below overflow (but apparently dropping) when I left.</DIV> <DIV>I did not see Old Faithful in eruption all day, but radio calls indicated that it was active.</DIV> <DIV>I barely missed the start of Great Fountain, which went at 0632.</DIV> <DIV>I barely missed Labial, which clearly erupted while I was talking to Lynn at Great Fountain.</DIV> <DIV>I got into a bad bison jam enroute out.</DIV> <DIV> </DIV> <DIV>A nice day.</DIV> <DIV> </DIV> <DIV>Scott Bryan</DIV></FONT></BODY></HTML>