<div dir="ltr">Today's seminar will be given by Prof. Bruce Houghton from the University of Hawaii on “Explaining diversity in the style of very recent pyroclastic eruptions at Kīlauea, Hawaii”<div><br></div><div>See abstract below. </div><div><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Maria H. Janebo</b> <span dir="ltr"><<a href="mailto:janebo@hi.is">janebo@hi.is</a>></span><br>Date: Fri, Oct 21, 2016 at 9:04 AM<br>Subject: [Jhi] Friday seminar - TODAY 12:30 - Prof. Bruce Houghton "Explaining diversity in the style of very recent pyroclastic eruptions at Kīlauea, Hawaii<br>To: <a href="mailto:jhi@hi.is">jhi@hi.is</a><br><br><br><div style="word-wrap:break-word"><div><br></div><div>Dear all,</div><div><br></div><div>the Friday seminar series continues today (21 October) at 12:30 in the seminar room on the 3rd floor with a presentation given by:<br><br>Bruce Houghton, Gordon A. Macdonald Professor of Volcanology, University of Hawaii at Manoa.<br><b>“Explaining diversity in the style of very recent pyroclastic eruptions at Kīlauea, Hawaii”</b><br><br>Twenty-first century pyroclastic eruptions at Kīlauea, at Halemaʻumaʻu since 2010 and the 2011 Kamoamoa eruption, have showed features of both Hawaiian fountaining and Strombolian explosivity. At both sites, activity was often continuous over similar timescales to Hawaiian fountaining but was markedly less steady than the classical 20th century high fountains seen at Pu‘u O‘o and Kīlauea Iki. A significant portion of the gas phase was released as discrete bubble bursts, in a manner that parallels Strombolian explosions but with frequencies two or three orders of magnitude higher than at Stromboli, which permitted sustained but not steady events.<br> The advent of regular deployment of high speed cameras on volcanoes has revolutionized our ability to make observations of fountaining and spattering eruption dynamics on very fine time and length scales. On Kīlauea we have employed this technology since 2013. The modern activity at the Kīlauea vents provides insight into the passage between Hawaiian fountaining and Strombolian explosivity. It is highly instructive in terms of: (a) the diversity of degassing/outgassing possible at basaltic volcanoes, in general and (b) the controls on mechanically coupled versus decoupled behavior of the exsolved bubbles. <br><div><br> </div><div><img id="gmail-m_-39216652913297282048A6A1943-CD1C-4B41-BB9E-D3F37212F0D2" height="113" width="199" src="cid:2AF63844-DDDA-4127-9FC5-BE947355FB1F@rhi.hi.is"> Halemaʻumaʻu 2015</div><div><br></div><div><img id="gmail-m_-3921665291329728204C50FF3C4-115B-48C2-A527-BC352D7A914E" height="118" width="201" src="cid:130DA45A-975C-49C6-B6DE-5F4D13B4AB77@rhi.hi.is"> Kamoamoa March 2011</div><div><br></div><div> <br></div><div><br></div></div><div><br></div><div>
<div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">_____________________________</div><div style="color:rgb(0,0,0);letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">Maria H. Janebo<br>Postdoctoral Research Fellow<br><br>Nordic Volcanological Center<br>Institute of Earth Sciences<br>University of Iceland, Askja 223<br>Sturlugata 7, 101 Reykjavik, Iceland</div></div></div>
</div>
<br></div><br>______________________________<wbr>_________________<br>
Jhi mailing list<br>
<a href="mailto:Jhi@hi.is">Jhi@hi.is</a><br>
<a href="http://listar.hi.is/mailman/listinfo/jhi" rel="noreferrer" target="_blank">http://listar.hi.is/mailman/<wbr>listinfo/jhi</a><br>
<br></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div><div>Deirdre Clark, PhD Research Fellow<br></div>University of Iceland | Háskóli Íslands<br></div><div>Institute of Earth Sciences<br></div><div>Sturlugata 7, Askja, Room 265<br></div><div>101 Reykjavík, Iceland<br><br></div><div>+354 525 5414 (Office)<br>+354 690 5745 (Mobile)<br></div><div><a href="mailto:dec2@hi.is" target="_blank">dec2@hi.is</a><br></div></div></div>
</div></div>