{
"version": "1.0",
"query": {
"text": null,
"operator": "and",
"filters": [
{
"field": "concept",
"op": "descendant_of",
"value": "gcmd_platform:observation-based",
"evidence": null
}
],
"evidence_policy": "standard"
},
"sort": null,
"page": {
"size": 25
}
}NASA Earthdata CMR + NASA Data Portal2022 · Image data
M2-SCREAM: Monthly,Model-Level,Assimilated Constituent Fields uncertaintiesThe MERRA-2 Stratospheric Composition Reanalysis of Aura MLS (M2-SCREAM) products produced at NASA’s Global Modeling and Assimilation Office (GMAO) are generated by assimilating MLS and OMI retrievals into the GEOS Constituent Data Assimilation System (CoDAS) driven by meteorological fields from MERRA-2. M2-SCREAM assimilates hydrochloric acid (HCl), nitric acid (HNO3), stratospheric water vapor (
NASA Earthdata CMR + NASA Data Portal2022 · Image data
M2-SCREAM: 3d,3-Hourly,Instantaneous,Model-Level,Assimilation,Assimilated Constituent Fields,Replayed MERRA-2 Meteorological FieldsThe MERRA-2 Stratospheric Composition Reanalysis of Aura MLS (M2-SCREAM) products produced at NASA’s Global Modeling and Assimilation Office (GMAO) are generated by assimilating MLS and OMI retrievals into the GEOS Constituent Data Assimilation System (CoDAS) driven by meteorological fields from MERRA-2. M2-SCREAM assimilates hydrochloric acid (HCl), nitric acid (HNO3), stratospheric water vapor (
NASA Earthdata CMR2016 · Excel spreadsheet
Understanding degassing and transport of CO2-rich alkalic magmas at Ross Island, Antarctica using olivine-hosted melt inclusionsVolatiles play an important role in magmatic and volcanic processes. Melt inclusions are a powerful tool to study pre-eruptive volatiles, but interpretation of the H2O and CO2 variations can be difficult. The H2O and CO2 contents of melt inclusions from nine basanites from Hut Point Peninsula, Mt Terror and Mt Bird on Ross Island, Antarctica, were studied to understand better the behavior of volat
NASA Earthdata CMR + NASA Data Portal2015 · Image data
NASA Energy and Water cycle Study (NEWS) Annual Climatology of the 1st decade of the 21st Century V1.0 (NEWS_WEB_ACLIM)NASA Energy and Water cycle Study (NEWS) Climatology of the 1st decade of the 21st Century Dataset summarizes the original observationally-based mean fluxes of water and energy budget components during the first decade of the 21st Century, for each continent and ocean basin on monthly and annual scales as well as means over all oceans, all continents, and the globe. A careful accounting of uncerta
NASA Earthdata CMR + NASA Data Portal2015 · Image data
NASA Energy and Water cycle Study (NEWS) Monthly Climatology of the 1st decade of the 21st Century V1.0 (NEWS_WEB_MCLIM)NASA Energy and Water cycle Study (NEWS) Climatology of the 1st decade of the 21st Century Dataset summarizes the original observationally-based mean fluxes of water and energy budget components during the first decade of the 21st Century, for each continent and ocean basin on monthly and annual scales as well as means over all oceans, all continents, and the globe. A careful accounting of uncerta
NASA Earthdata CMR2012 · Excel spreadsheet
Erebus source to surface degassing, thermodynamics, solubilities, and magma storage and evolution (2013-2016)We present new equilibrium mixed-volatile (H2O–CO2) solubility data for a phonotephrite from Erebus volcano, Antarctica. H2O–CO2-saturated experiments were conducted at 400–700 MPa, 1,190 °C, and ~NNO + 1 in non-end-loaded piston cylinders. Equilibrium H2O–CO2 fluid compositions were determined using low-temperature vacuum manometry, and the volatile and major element
NASA Earthdata CMR2011 · Text
A new Holocene eruptive history of Erebus volcano, Antarctica, using cosmogenic 3He and 36Cl exposure agesThe ages of recent effusive eruptions on Erebus volcano, Antarctica are poorly known. Published 40Ar/39Ar ages of the 10 youngest ?post-caldera? lava flows are unreliable because of the young ages of the flows (<10 ka) and the presence of excess 40Ar. Here we use cosmogenic 3He and 36Cl to provide new ages for the 10 youngest flows and 3 older summit flows, including a newly recognized flow distin
NASA Earthdata CMR2007 · Text
Internal structure of Erebus volcano, Antarctica imaged by high-resolution active-source seismic tomography and coda interferometryErebus volcano, Antarctica has hosted a persistent convecting phonolite lava lake for over 40 years. The lake produces small (VEI 0?1) Strombolian eruptions resulting from gas slugs rising through the upper conduit system. High-resolution (to scale lengths of several hundreds of meters) three-dimensional P-wave tomographic velocity images were obtained to a depth of approximately 600 m below the v
NASA Earthdata CMR2007 · Text
Multiple scattering from icequakes at Erebus volcano, Antarctica, and practical convergence of coda-based correlationsWe examine seismic coda from an unusually dense deployment of over 100 short-period and broadband seismographs in the summit region of Mount Erebus volcano on a network with an aperture of approximately 5 km. We investigate the energy-partitioning properties of the seismic wavefield generated by thousands of small icequake sources originating on the upper volcano and use them to estimate GreenR
NASA Earthdata CMR2005 · Text
The first second of volcanic eruptions from the Erebus volcano lava lake, Antarctica--Energies, pressures, seismology, and infrasoundWe describe a multiparameter experiment at Erebus volcano, Antarctica, employing Doppler radar, video, acoustic, and seismic observations to estimate the detailed energy budget of large (up to 40 m-diameter) bubble bursts from a persistent phonolite lava lake. These explosions are readily studied from the crater rim at ranges of less than 500 m and present an ideal opportunity to constrain the dyn
NASA Earthdata CMR1984 · Excel spreadsheet
Erebus hydrogen emissions, oxidation state, phase equilibria, and anorthoclase megacrystalsThe continuous measurement of molecular hydrogen (H2) emissions from passively degassing volcanoes has recently been made possible using a new generation of low-cost electrochemical sensors. We have used such sensors to measure H2, along with SO2, H2O and CO2, in the gas and aerosol plume emitted from the phonolite lava lake at Erebus volcano, Antarctica. The measurements were made at the crater r
NASA Earthdata CMR0079 · Text
Rheology of phonolitic magmas - the case of the Erebus lava lakeLong-lived active lava lakes are comparatively rare and are typically associated with low-viscosity basaltic magmas. Erebus volcano, Antarctica, is unique today in hosting a phonolitic lava lake. Phonolitic magmas can erupt explosively, as in the 79 CE Plinian eruption of Vesuvius volcano, Italy, and it is therefore important to understand their physical properties. The phonolite at Erebus has sli