<!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 6.00.6000.16825" name=GENERATOR></HEAD> <BODY> <DIV dir=ltr align=left><SPAN class=264563904-28052009><FONT face=Arial color=#0000ff size=2>According to Hank, the eruption was smaller than one photographed a couple of years ago, but he noted that they felt heat from the event standing at the first wide spot at Wall/Black Diamond pool.  Hank also noted that there were "head sized chunks" in the ejecta.</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=264563904-28052009><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=264563904-28052009><FONT face=Arial color=#0000ff size=2>Although there is a continuum of activity from "geyser eruption" to "hydrothermal explosion", it appears that Black Diamond is a violent eruption rather than a Porkchop-type hydrothermal explosion, especially as there have been well over a dozen known events (I don't have the number that have been noted handy as I write this) and the character of the pool has not changed very much and the events continue to occur indicating that the force has not damaged the vent structure.</FONT></SPAN></DIV> <DIV dir=ltr align=left><SPAN class=264563904-28052009><FONT face=Arial color=#0000ff size=2></FONT></SPAN> </DIV> <DIV dir=ltr align=left><SPAN class=264563904-28052009><FONT face=Arial color=#0000ff size=2>Ralph Taylor</FONT></SPAN></DIV><BR> <DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left> <HR tabIndex=-1> <FONT face=Tahoma size=2><B>From:</B> geysers-bounces@lists.wallawalla.edu [mailto:geysers-bounces@lists.wallawalla.edu] <B>On Behalf Of </B>David Schwarz<BR><B>Sent:</B> Tuesday, May 26, 2009 9:33 PM<BR><B>To:</B> Geyser Observation Reports<BR><B>Subject:</B> Re: [Geysers] Photograph of Black Diamond eruption (Stephens)<BR></FONT><BR></DIV> <DIV></DIV><BR>   The story seems to have been picked up by the AP.  The same story with minor differences has appeared on several sites  in the last couple of days.  One example:  <A href="http://www.mlive.com/newsflash/technology/index.ssf?/base/national-18/124318388065780.xml&storylist=technology" target=_blank>http://www.mlive.com/newsflash/technology/index.ssf?/base/national-18/124318388065780.xml&storylist=technology</A><BR><BR>   At least those interviewed seemed to be under the impression that what they saw was a bona fide hydrothermal explosion, but it doesn't look like they bothered to interview Hank.  I've been kind of wondering myself whether this was just more of what Black Diamond has been doing occasionally since 2006.<BR><BR>David Schwarz<BR><BR> <DIV class=gmail_quote>On Tue, May 26, 2009 at 9:22 AM, Paul Strasser <SPAN dir=ltr><<A href="mailto:upperbasin@comcast.net" target=_blank>upperbasin@comcast.net</A>></SPAN> wrote:<BR> <BLOCKQUOTE class=gmail_quote style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid"> <DIV lang=EN-US vlink="blue" link="blue"> <DIV> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">We need to be clear.  This was an eruption from the pool containing Black Diamond Geyser.  I saw an eruption of it in 2007 that was a bit smaller than this eruption.  Other gazers had seen larger eruptions (and photographed it from across the highway), and the evidence of even larger eruptions was present on the boardwalk and nearby trees – splashes of muddy water leaving bits of elongated mud a considerable distance from the pool.</SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">The eruption I saw (along with several other gazers, including Mike Keller) looked like the photo.  It was amazingly black and filled with debris and glop, albeit shorter.</SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">As Scott noted, the article was filled with inaccuracies (no geysers at Biscuit Basin?  And even if they meant “no geysers in this area of Biscuit Basin” it’s still wrong), but the most inaccurate part of it is the primary point:  that this was a rare hydrothermal explosion.  </SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">No, it was an eruption of an infrequent geyser.  Now, was this particular eruption so large that it shattered the vent structure?  We have no idea, because the pool is so muddy and dark.  I suppose Black Diamond could have done a Porkchop on us, but the only way we will know is to see if there are additional eruptions in the next month/year.</SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I have no problem with Scott writing a little comment to the editors about this.</SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Paul Strasser</SPAN></FONT></P> <P><FONT face=Arial color=navy size=2><SPAN style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"></SPAN></FONT> </P> <DIV> <DIV style="TEXT-ALIGN: center" align=center><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"> <HR align=center width="100%" SIZE=2> </SPAN></FONT></DIV> <P><B><FONT face=Tahoma size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> <A href="mailto:geysers-bounces@lists.wallawalla.edu" target=_blank>geysers-bounces@lists.wallawalla.edu</A> [mailto:<A href="mailto:geysers-bounces@lists.wallawalla.edu" target=_blank>geysers-bounces@lists.wallawalla.edu</A>] <B><SPAN style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Jack Ashe<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Monday, May 25, 2009 8:14 AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Geyser Observation Reports <DIV><BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Geysers] Photograph of Black Diamond eruption (Stephens)</DIV></SPAN></FONT> <P></P></DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P> <DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Hydrothermal or not, that is the quesiton!</SPAN></FONT></P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Isn't the assertion in the article that this was not a geyser eruption but rather a hydrothermal explosion resulting in geologic effect similar to the Pocket Basin explosion crater, Indian Pond or the Duck Lake events?</SPAN></FONT></P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Was this NOT a true hydrothermal explosion but just a "messy" geyser eruption? </SPAN></FONT></P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"> If it is a hydrothermal explosion, I have been informed that these probably result  from a sudden drop in water pressure over the thermal source. Did that occur at Black Diamond??</SPAN></FONT></P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"></SPAN></FONT> </P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial">Jack<BR> </SPAN></FONT></P></DIV> <DIV> <P><FONT face=Arial size=3><SPAN style="FONT-SIZE: 12pt; FONT-FAMILY: Arial"></SPAN></FONT> </P> <DIV> <DIV style="TEXT-ALIGN: center" align=center><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> <HR align=center width="100%" SIZE=1> </SPAN></FONT></DIV> <P style="MARGIN-BOTTOM: 12pt"><B><FONT face=Tahoma size=2><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> "<A href="mailto:TSBryan@aol.com" target=_blank>TSBryan@aol.com</A>" <<A href="mailto:TSBryan@aol.com" target=_blank>TSBryan@aol.com</A>><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> <A href="mailto:geysers@lists.wallawalla.edu" target=_blank>geysers@lists.wallawalla.edu</A><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Sunday, May 24, 2009 4:35:27 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Geysers] Photograph of Black Diamond eruption (Stephens)</SPAN></FONT></P> <DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Need I point out the errors in this article. I hope the source wasn't in-park... but as we all know, Black Diamond has had quite a few eruptions... and above all, the statement that there are no geysers at Biscuit Basin......... Well ?</SPAN></FONT></P></DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Scott Bryan</SPAN></FONT></P></DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV> <DIV> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">In a message dated 5/24/2009 12:56:37 AM Mountain Daylight Time, <A href="mailto:david.schwarz@gmail.com" target=_blank>david.schwarz@gmail.com</A> writes:</SPAN></FONT></P></DIV> <BLOCKQUOTE style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: medium none; MARGIN-TOP: 5pt; PADDING-LEFT: 4pt; MARGIN-BOTTOM: 5pt; PADDING-BOTTOM: 0in; MARGIN-LEFT: 3.75pt; BORDER-LEFT: 1.5pt solid; PADDING-TOP: 0in; BORDER-BOTTOM: medium none"> <P><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"><BR></SPAN></FONT><FONT face=Arial><SPAN style="FONT-FAMILY: Arial">There's another photo of the explosion in the Jackson Hole News, along with a write-up:<BR><BR></SPAN></FONT><A title=http://www.jacksonholenews.com/article.php?art_id=4624 href="http://www.jacksonholenews.com/article.php?art_id=4624" target=_blank><FONT face=Arial><SPAN style="FONT-FAMILY: Arial">http://www.jacksonholenews.com/article.php?art_id=4624</SPAN></FONT></A></P></BLOCKQUOTE></DIV> <DIV> <P><FONT face="Times New Roman" color=black size=3><SPAN style="FONT-SIZE: 12pt; COLOR: black"></SPAN></FONT> </P> <DIV style="MARGIN-TOP: 7.5pt; TEXT-ALIGN: center" align=center><FONT face="Times New Roman" color=black size=3><SPAN style="FONT-SIZE: 12pt; COLOR: black"> <HR align=center width="100%" SIZE=2> </SPAN></FONT></DIV> <P style="MARGIN-TOP: 7.5pt"><B><FONT face="Times New Roman" color=black size=3><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; COLOR: black">An Excellent Credit Score is 750. <A href="http://pr.atwola.com/promoclk/100126575x1221322948x1201367184/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=MayExcfooterNO62" target=_blank>See Yours in Just 2 Easy Steps!</A></SPAN></FONT></B></P></DIV></DIV></DIV></DIV> <P style="MARGIN-TOP: 7.5pt"><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt"></SPAN></FONT> </P></DIV></DIV></DIV><BR>_______________________________________________<BR>Geysers mailing list<BR><A href="mailto:Geysers@lists.wallawalla.edu" target=_blank>Geysers@lists.wallawalla.edu</A><BR><A href="https://lists.wallawalla.edu/mailman/listinfo/geysers" target=_blank>https://lists.wallawalla.edu/mailman/listinfo/geysers</A><BR></BLOCKQUOTE></DIV><BR></BODY></HTML>