Shallow magma accumulation at Kīlauea Volcano, Hawai‘i, revealed by microgravity surveys

Abstract

Research Article| December 01, 2010 Shallow magma accumulation at Kīlauea Volcano, Hawai'i, revealed by microgravity surveys Daniel J. Johnson; Daniel J. Johnson * *Deceased Search for other works by this author on: GSW Google Scholar Albert A. Eggers; Albert A. Eggers 1Geology Department, University of Puget Sound, Tacoma, Washington 98416, USA Search for other works by this author on: GSW Google Scholar Marco Bagnardi; Marco Bagnardi † 2Department of Earth Sciences, Sapienza, University of Rome, Italy †Current address: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida 33149, USA. Search for other works by this author on: GSW Google Scholar Maurizio Battaglia; Maurizio Battaglia 2Department of Earth Sciences, Sapienza, University of Rome, Italy3Volcano Science Center, U.S. Geological Survey, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Michael P. Poland; Michael P. Poland § 4Hawaiian Volcano Observatory, U.S. Geological Survey, Hawai'i Volcanoes National Park, Hawaii 96718, USA §E-mail: mpoland@usgs.gov. Search for other works by this author on: GSW Google Scholar Asta Miklius Asta Miklius 4Hawaiian Volcano Observatory, U.S. Geological Survey, Hawai'i Volcanoes National Park, Hawaii 96718, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Daniel J. Johnson * Albert A. Eggers 1Geology Department, University of Puget Sound, Tacoma, Washington 98416, USA Marco Bagnardi † 2Department of Earth Sciences, Sapienza, University of Rome, Italy Maurizio Battaglia 2Department of Earth Sciences, Sapienza, University of Rome, Italy3Volcano Science Center, U.S. Geological Survey, Menlo Park, California 94025, USA Michael P. Poland § 4Hawaiian Volcano Observatory, U.S. Geological Survey, Hawai'i Volcanoes National Park, Hawaii 96718, USA Asta Miklius 4Hawaiian Volcano Observatory, U.S. Geological Survey, Hawai'i Volcanoes National Park, Hawaii 96718, USA §E-mail: mpoland@usgs.gov. *Deceased †Current address: Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, Florida 33149, USA. Publisher: Geological Society of America Received: 22 Apr 2010 Revision Received: 11 Jul 2010 Accepted: 23 Jul 2010 First Online: 09 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 © 2010 Geological Society of America Geology (2010) 38 (12): 1139–1142. https://doi.org/10.1130/G31323.1 Article history Received: 22 Apr 2010 Revision Received: 11 Jul 2010 Accepted: 23 Jul 2010 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Daniel J. Johnson, Albert A. Eggers, Marco Bagnardi, Maurizio Battaglia, Michael P. Poland, Asta Miklius; Shallow magma accumulation at Kīlauea Volcano, Hawai'i, revealed by microgravity surveys. Geology 2010;; 38 (12): 1139–1142. doi: https://doi.org/10.1130/G31323.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Using microgravity data collected at Kīlauea Volcano, Hawai'i (United States), between November 1975 and January 2008, we document significant mass increase beneath the east margin of Halema'uma'u Crater, within Kīlauea's summit caldera. Surprisingly, there was no sustained uplift accompanying the mass accumulation. We propose that the positive gravity residual in the absence of significant uplift is indicative of magma accumulation in void space (probably a network of interconnected cracks), which may have been created when magma withdrew from the summit in response to the 29 November 1975 M = 7.2 south flank earthquake. Subsequent refilling documented by gravity represents a gradual recovery from that earthquake. A new eruptive vent opened at the summit of Kīlauea in 2008 within a few hundred meters of the positive gravity residual maximum, probably tapping the reservoir that had been accumulating magma since the 1975 earthquake. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.