ÿþ<!DOCTYPE html public "-//w3c//dtd html 3.2//en"> <HTML> <HEAD> <TITLE> USGS Hawaiian Volcano Observatory (HVO) </TITLE> <META name="description" content="An archived home page that highlights lava pouring into the sea from Kilauea Volcano, Hawaii."> <META name="keywords" content="USGS,HVO,Hawaiian Volcano Observatory,Hawaii Volcano Observaotry,Hawai`i Volcano Observatory,volcano,volcanoes eruption,lava,lava,fountains,basalt,basalt lava,seismicity,earthquakes, Mauna Loa,Kilauea,Mauna Kea,Hualalai,Kohala,Haleakala,Maui,Hawaii, Hawai`i,Hawaiian,shield,shield volcanoes,caldera,rift zones, HI"> <META name="author" content="HVO, Hawaiian Volcano Observatory"> <META name="publisher" content="USGS, U.S. Geological Survey"> <META name="created" content="19980313"> <META name="expires" content="Never"> </HEAD> <BODY bgcolor="#FFFFFF" background="/templates/stripe80.gif"> <!-- Page banner begins here--> <TABLE border="0" width="600"> <TR> <TD colspan="2"> </TD> </TR> <TR> <TD colspan="2"><A href="http://www.usgs.gov"><IMG src="http://hvo.wr.usgs.gov/templates/banner3a.gif" alt="USGS" border="0" width="600" height="74"></A><BR> <IMG src="http://hvo.wr.usgs.gov/templates/banner3b.gif" alt="Hawaiian Volcano Observatory" border="0" width="600" height="74"> </TD> </TR> <TR> <TD valign="top"> <!-- Navigational links begins here--> <TABLE border="0"> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="#link_group_0"><IMG src="http://welcome.hp.com/country/img/spacer.gif" alt="Skip past Left navigational bar" border="0" height="1" width="1"></A><A href="http://hvo.wr.usgs.gov/kilauea/"><IMG src="http://hvo.wr.usgs.gov/templates/kilauea1.gif" alt="Kilauea" border="0" width="200" height="24"></A></TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://volcano.wr.usgs.gov/hvostatus.php">Eruption Update</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov//templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov//kilauea/summary/main.html">Eruption Summary</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/kilauea/hazards/main.html">Hazards</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/kilauea/history/main.html">History</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/cam">Pu`u`O`o Panorama</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/cam3">July 21 Panorama</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/gallery/kilauea/volcanomovies">Volcano Movies</A><BR> </TD> </TR> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="http://hvo.wr.usgs.gov/maunaloa/"><IMG alt="Mauna Loa" border="0" src="http://hvo.wr.usgs.gov/templates/mauna1.gif" width="200" height="24"></A> </TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/maunaloa/current/main.html">Current Activity</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/maunaloa/hazards/main.html">Hazards</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/maunaloa/history/main.html">History</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/cam2">Summit Panorama</A><BR> </TD> </TR> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="http://hvo.wr.usgs.gov/earthquakes/"><IMG border="0" alt="Earthquakes" src="http://hvo.wr.usgs.gov/templates/quake1.gif" width="200" height="24"></A> </TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/new">Current Eqs Map</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/felt">Felt EQs</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/destruct">Destructive EQs</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/seismicity">Seismicity</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/hazards">Hazards, Zoning</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/earthquakes/history">Instrumentation</A> </TD> </TR> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="http://hvo.wr.usgs.gov/volcanoes/"><IMG alt="Other Volcanoes" border="0" src="http://hvo.wr.usgs.gov/templates/other1.gif" width="200" height="24"></A> </TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/volcanoes/hualalai/main.html">Hualalai</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/volcanoes/haleakala/main.html">Haleakala</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/volcanoes/loihi/main.html">Lo`ihi</A> </TD> </TR> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="http://hvo.wr.usgs.gov/hazards/"><IMG alt="Volcanic Hazards" border="0" src="http://hvo.wr.usgs.gov/templates/hazards1.gif" width="200" height="24"></A> </TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/hazards/oceanentry/main.html">Ocean Entry</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/hazards/lavazones/main.html">Lava Zones</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/hazards/types/main.html">Types</A> </TD> </TR> <TR> <TD align="LEFT" valign="TOP" colspan="2"><A href="http://hvo.wr.usgs.gov/observatory/"><IMG alt="About HVO" border="0" src="http://hvo.wr.usgs.gov/templates/observatory1.gif" width="200" height="24"></A> </TD> </TR> <TR> <TD width="66"></TD> <TD width="134"> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/observatory/hvo_history.html">History of HVO</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/volunteer/">Volunteer program</A><BR> <IMG border="0" src="http://hvo.wr.usgs.gov/templates/disc.gif" alt="black circle" width="9" height="9"><A href="http://hvo.wr.usgs.gov/observatory/HVO_directions.html">Location</A><A name="link_group_0"></A> </TD> </TR> </TABLE> </td> <!-- Feature story table begins here--> <TD valign="top"><P> <TABLE border="0"> <h3> <IMG SRC="http://hvo.wr.usgs.gov/images/new.gif" WIDTH="20" HEIGHT="9" BORDER="0" ALT=""> <A HREF="http://hvo.wr.usgs.gov/pressreleases/pr07_21_07.html">July 21, 2007 2:00PM Press Release - New Fissure eruption east of Pu u  L M Crater </A></h3> <TR> <TD valign="top"><DIV align="center"><H3>Lava quietly returns to Pu`u `O`o crater</H3> </div> </td> </tr> <TR> <TD> <P> Patiently peering through the heavy fume that has shrouded Pu`u `O`o crater for the last two weeks, helicopter tour operators finally glimpsed a new pad of <a href="http://hvo.wr.usgs.gov/kilauea/update/archive/2007/Jul/DSCN0674_L.jpg"><img src="http://hvo.wr.usgs.gov/kilauea/update/archive/2007/Jul/DSCN0674_S.jpg" width="200" height="150" align="right" border="1" alt=" A brief glimpse of a lava flow on the collapsed floor of Pu`u `O`o crater."></a>active lava on the crater floor on Monday morning, July 2. When HVO scientists arrived that afternoon, the eruption had resumed and was loudly jetting gas and spattering from a point below the location of the Beehive vent, flowing eastward, and ponding below the location of the Drainhole vent. The active lava is below these features because the crater floor dropped at least 100 m during the eruptive pause that ended Monday. <P> As of Wednesday morning, July 4, lava is filling the crater and forming a circulating lava pond that is sometimes visible in the Pu`u `O`o crater webcam. The pond appears to be fed from a source toward its west end, which is not directly visible to the webcam. <center> <TABLE BORDER="0" CELLPADDING="3" WIDTH="455"> <tr> <td width="100%" align="center"> <a href="http://hvo.wr.usgs.gov/kilauea/update/archive/2007/Jul/200707040442pan_L.jpg"><img src="http://hvo.wr.usgs.gov/kilauea/update/archive/2007/Jul/200707040442pan_S.jpg" width="450" height="124" border="1" alt="View of a circulating lava pond filling the collapsed floor of Pu`u `O`o crater, as captured by the webcam at 4:42 am July 4, 2007."></a><BR> <font size="2"><B>View of a circulating lava pond filling the collapsed floor of <BR>Pu`u `O`o crater, as captured by the webcam at 4:42 am July 4, 2007.</b> </td> </table></center> According to our geophysical instrument networks, Pu`u `O`o vent is no longer subsiding. Seismic and thermal energy outputs from the crater have increased slightly accompanying the return of lava, but are still well below levels that were common before June 17 when the intrusion/eruption event sequence started. <P> Lava returned to Pu`u `O`o crater after the 1997 intrusion and eruption at Napau Crater and the 1999 intrusion in the Upper East Rift Zone after eruptive pauses lasting 23 and 11 days, respectively. <P> Learn more about Kilauea's east rift zone: <UL> <LI><A HREF="http://hvo.wr.usgs.gov/gallery/kilauea/erz/erz_overview.html">Overview </A>(description, illustrations, graphs)<BR> <LI><A HREF="http://hvo.wr.usgs.gov/gallery/kilauea/erz/">Photographs</A> of main features <BR> <LI><A HREF="http://hvo.wr.usgs.gov/gallery/kilauea/erz/punaridge.html">Puna Ridge</A>: east rift zone beneath the sea <BR> </UL> <P> </p> </td> </tr> <tr> <td>&nbsp; </td> <td>&nbsp; </td> </tr> <tr> <td bgcolor="#FFD700"><font color="#003399"><a href="http://hvo.wr.usgs.gov/archive"><div align="center"><b>Archive of previous feature stories</b></div></a></font> </td> </tr> </table> </td> </tr> </table> <!-- Feature photograph table begins here --> <p><table border="0" cellpadding="4"> <tr> <td width="70">&nbsp;</td> <td width="360" valign="center" align="center"><a href="http://hvo.wr.usgs.gov/archive/spotlight_images/hlsunrise_L.jpg"><IMG src="http://hvo.wr.usgs.gov/archive/spotlight_images/hlsunrise_S.jpg" width="200" height="82" border="1" alt="A beautiful sunrise"></a><br> <font size="2"><b>Photograph by M. Sako<br> March 29, 2006</b></font> </td> <td rowspan="2" width="292" valign="middle"> <BR> <h3><center>Breath-taking Sunrises</center></h3> <b>Top:</b> A beautiful sunrise of the mountainside from Hualalai volcano. <P> <b>Bottom:</b> Spectacular sunrise overlooking Mauna Kea and Mauna Loa volcanoes. Photo taken from the top of Hualalai volcano. <P> </p> <p align="center"><b><a href="http://hvo.wr.usgs.gov/archive/spotlight_images/">Archive of Featured Photographs</a></b></p> </td> </tr> <tr> <td width="70">&nbsp; </td> <td width="360" valign="center" align="center"><a href="http://hvo.wr.usgs.gov/archive/spotlight_images/20060329_MLSunrise_L.jpg"><img src="http://hvo.wr.usgs.gov/archive/spotlight_images/20060329_MLSunrise_M.jpg" width="350" height="65" border="1" alt="Spectacular sunrise overlooking Mauna Kea and Mauna Loa volcanoes. Photo taken from the top of Hualalai volcano. "></a><br> <font size="2"><b>Photograph by M. Sako<br> March 29, 2006</b></font> </td> </tr> </table> <!-- Table of other links begins here--> <P> <TABLE border="0" cellpadding="2"> <TR> <TD width="70">&nbsp;</TD> <TD><TABLE border="2" cellpadding="5"> <TR> <TD colspan="2" align="CENTER" valign="TOP" width="500" bgcolor="#FFD700"><FONT color="#003399"><h3>More Volcano Information from HVO and Beyond</h3></FONT> </TD> </TR> <TR> <TD width="250"><IMG align="RIGHT" vspace="3" hspace="8" src="http://hvo.wr.usgs.gov/templates/seismic.gif" width="65" border="0" height="50" alt="Earthquake seismogram"><a href="http://pasadena.wr.usgs.gov/shake/hi">Report a felt earthquake</A> to HVO using this form. </TD> <TD rowspan="2" valign="middle"><div align="center"><b>More USGS Volcano Web sites</b></div><br> <FONT size="2"> <UL> <li><A href="#link_group_1"><img src="http://welcome.hp.com/country/img/spacer.gif" alt="Skip past USGS volcano websites" border="0" height="1" width="1"></A><A href="http://www.avo.alaska.edu/avo4/index.htm">Alaska Volcano Observatory</A> <li><A href="http://volcano.wr.usgs.gov/cnmistatus.php">Northern Mariana Islands</A> <li><A href="http://vulcan.wr.usgs.gov/">Cascades Volcano Observatory</A> <li><A href="http://lvo.wr.usgs.gov/"> Long Valley Observatory</A> <li><A href="http://volcanoes.usgs.gov/yvo/"> Yellowstone Volcano Observatory</A> <li><A href="http://volcanoes.usgs.gov/">Volcano Hazards Program</A><A name="link_group_1"> </A> </UL> </FONT> </TD> </TR> <TR> <TD width="250"><IMG align="RIGHT" vspace="3" hspace="8" border="0" alt="Volcano Watch" src="http://hvo.wr.usgs.gov/templates/watch1.gif" width="100" height="18">Current issue of <a href="http://hvo.wr.usgs.gov/volcanowatch/current_issue.html">Volcano Watch essay</A>, written weekly by USGS scientists. </TD> </TR> <TR> <TD width="250"><IMG align="RIGHT" vspace="3" hspace="8" alt="National Park Service" src="http://hvo.wr.usgs.gov/templates/nps2.gif" width="60" border="0" height="75"><A href="http://www.nps.gov/havo">Hawai`i Volcanoes National Park</A>, home to HVO. Find visitor information and resources here. </TD> <TD width="250"><IMG align="RIGHT" vspace="3" hspace="8" src="http://hvo.wr.usgs.gov/templates/kids.gif" width="65" border="0" height="50" alt="Graphic: Kids Door"><a href="http://volcano.und.nodak.edu/vwdocs/kids/kids.html">Volcanoes for kids</A>, from the Volcano World website. </TD> </TR> </TABLE> </TD> </TR> </TABLE> <TABLE border="0" cellpadding="5"> <TR> <TD width="70"></TD> <TD> <!-- Footer navigational bar begins here --> <A href="#link_group_1"><img src="http://hvo.wr.usgs.gov/templates/LinkSpace.gif" alt="Skip past main content navigational bar" border="0" height="1" width="1"></a> <P><div align="center"><p><hr width="350"><P> <A HREF="/"><IMG ALT="Home" WIDTH="51" HEIGHT="18" BORDER="0" SRC="/templates/home2.gif"></A><IMG WIDTH="2" BORDER="0" Alt="blank spacer" SRC="/templates/space.gif"><A HREF="/volcanowatch/"><IMG ALT="Volcano Watch" WIDTH="97" HEIGHT="18" BORDER="0" SRC="/templates/watch2.gif"></A><IMG WIDTH="2" BORDER="0" Alt="blank spacer" SRC="/templates/space.gif"><A HREF="/products/"><IMG ALT="Products" WIDTH="65" HEIGHT="18" BORDER="0" SRC="/templates/products2.gif"></a><IMG Alt="blank spacer" SRC="/templates/space.gif"><A HREF="/gallery/"><IMG ALT="Gallery" WIDTH="91" HEIGHT="18" BORDER="0" SRC="/templates/photo2.gif"></A><IMG WIDTH="2" BORDER="0" Alt="blank spacer" SRC="/templates/space.gif"><A HREF="/pressreleases/"><IMG ALT="Press Releases" WIDTH="95" HEIGHT="18" BORDER="0" SRC="/templates/press2.gif"></A><BR> <A HREF="/howwork/"><IMG ALT="How Hawaiian Volcanoes Work" BORDER="0" HEIGHT="20" WIDTH="407" SRC="/templates/work2.gif"></A></div> <P><A name="link_group_1"><address> U.S. Department of the Interior, U.S. Geological Survey, <B>Menlo Park, California</B>, USA</a><BR> URL <B>http://hvo.wr.usgs.gov/index.html</b><br> Contact: <A HREF="mailto:hvowebmaster@usgs.gov"><B>hvowebmaster@usgs.gov</B></A><br> (808) 967-7328 (an autoattendant)<BR> <font size="2"> | <a href="http://www.usgs.gov/privacy.html">USGS Privacy Statement</a> | <a href="http://www.usgs.gov/disclaimer.html">USGS Disclaimer</a> | <a href="http://www.usgs.gov/accessibility.html">Accessibility</a> |</font><br> Last modification: 22 July 2007 (pnf) </address> </TD> </TR> </TABLE> </body></html>