Evidence for deformation associated with the 1998 eruption of Axial Volcano, Juan de Fuca Ridge, from acoustic extensometer measurements
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چکیده
منابع مشابه
Microbiological characterization of post-eruption “snowblower” vents at Axial Seamount, Juan de Fuca Ridge
Microbial processes within the subseafloor can be examined during the ephemeral and uncommonly observed phenomena known as snowblower venting. Snowblowers are characterized by the large quantity of white floc that is expelled from the seafloor following mid-ocean ridge eruptions. During these eruptions, rapidly cooling lava entrains seawater and hydrothermal fluids enriched in geochemical react...
متن کاملDissolved inorganic carbon isotopic composition of low-temperature axial and ridge-flank hydrothermal fluids of the Juan de Fuca Ridge
We analyzed stable carbon (δC) and radiocarbon (ΔC) isotopes of ocean crustal fluid samples from two low-temperature environments on and near the Juan de Fuca Ridge (JDFR), a seafloor spreading center in the northeastern Pacific Ocean. Themajor goals of this work were to resolve relative dissolved inorganic carbon (DIC) sources and removal processes, and characterize the isotopic signatures of ...
متن کاملShallow−crustal magma chamber beneath the axial high of the Coaxial Segment of Juan de Fuca Ridge at the "source site" of the 1993 eruption
de Fuca Ridge at the "source site" of the 1993 eruption William Menke Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA Michael West Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA Maya Tolstoy Lamont−Doherty Earth Observatory of Columbia University, Palisades NY 10964 USA (07−December−01) ABSTRACT Seismic imaging reveals a shallow−c...
متن کاملOsmium isotopes in hydrothermal £uids from the Juan de Fuca Ridge
We present Os data for axial high-temperature and off-axial low-temperature hydrothermal solutions from the Juan de Fuca Ridge. The high-temperature, H2S-bearing axial fluids have unradiogenic Os isotopes pointing to a nearly complete domination of osmium isotopes from the basalts during hydrothermal circulation. The ridge axis fluids typically do not show large enrichment in osmium concentrati...
متن کاملExplosive processes during the 2015 eruption of Axial Seamount, as recorded by seafloor hydrophones
Following the installation of the Ocean Observatories Initiative cabled array, the 2015 eruption of Axial Seamount, Juan de Fuca ridge, became the first submarine eruption to be captured in real time by seafloor seismic and acoustic instruments. This eruption also marked the first instance where the entire eruption cycle of a submarine volcano, from the previous eruption in 2011 to the end of t...
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 1999
ISSN: 0094-8276
DOI: 10.1029/1999gl900498