We present and release a new tool for music source separation with pre-trained models called Spleeter. Spleeter was designed with ease of use, separation performance, and speed in mind. Spleeter is based on Tensorflow (Abadi, 2015) and makes it possible to:

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Emission of volcanic gas is thought to be the dominant process by which volatiles transit from the deep earth to the atmosphere. Volcanic gas emissions, remain poorly constrained, and volcanoes of Peru are entirely absent from the current global dataset. In Peru, Sabancaya and Ubinas volcanoes are by far the largest sources of volcanic gas. Here, we report the first measurements of the compositions and fluxes of volcanic gases emitted from these volcanoes. The measurements were acquired in November 2015. We determined an average SO 2 flux of 15.3 ± 2.3 kg s −1 (1325-ton day −1 ) at Sabancaya and of 11.4 ± 3.9 kg s −1 (988-ton day −1 ) at Ubinas using scanning ultraviolet spectroscopy and dual UV camera systems. In-situ Multi-GAS analyses yield molar proportions of H 2 O, CO 2 , SO 2 , H 2 S and H 2 gases of 73, 15, 10 1.15 and 0.15 mol% at Sabancaya and of 96, 2.2, 1.2 and 0.05 mol% for H 2 O, CO 2 , SO 2 and H 2 S at Ubinas. Together, these data imply cumulative fluxes for both volcanoes of 282, 30, 27, 1.2 and 0.01 kg s −1 of H 2 O, CO 2 , SO 2 , H 2 S and H 2 respectively. Sabancaya and Ubinas volcanoes together contribute about 60% of the total CO 2 emissions from the Central Volcanic zone, and dominate by far the total revised volatile budget of the entire Central Volcanic Zone of the Andes.

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Abstract:The continuous measurement of molecular hydrogen (H2) emissions from passively degassing volcanoes has recently been made possible thanks to the development of electrochemical sensors. We have used this technology to measure H2, along with SO2, H2O, and CO2, in the gas and aerosol plume emitted from the lava lake of Erebus volcano, Antarctica. The measurements were made at the crater rim between December 2010 and January 2011. Combined with data for the long-term SO2 emission rate for Erebus, they indicate a mean H2 flux of 0.03 kg s-1 (2.8 Mg day-1).The observed H2 content in the plume is consistent with previous estimates of redox conditions in the lava lake (~0.9 log units below the quartz-fayalaite-magnetite buffer). These measurements suggest that H2 does not combust at the surface of the lake, and that H2 is kinetically inert in the gas/aerosol plume, retaining the signature of the hightemperature chemical equilibrium reached in the lava lake. We also observe a cyclical variation in the H2/SO2 ratio with a period of ~10 min. These cycles correspond to oscillatory patterns of surface motion of the lava lake that have been interpreted as signs of a pulsatory magma supply at the top of the magmatic conduit. Powered by Editorial Manager® and Preprint Manager® from Aries Systems CorporationM o u s s a l l a m e t a l .H 2 e m i s s i o n f r o m E r e b u s v o l c a n o P a g e | 1 Abstract 16The continuous measurement of molecular hydrogen (H 2 ) emissions from passively degassing 17 volcanoes has recently been made possible thanks to the development of electrochemical 18 sensors. We have used this technology to measure H 2 , along with SO 2 , H 2 O, and CO 2 , in the 19 gas and aerosol plume emitted from the phonolite lava lake at Erebus volcano, Antarctica. 20The measurements were made at the crater rim between December 2010 and January 2011. 21Combined with data for the long-term SO 2 emission rate for Erebus, they indicate a mean H 2 22 flux of 0.03 kg s -1 (2.8 Mg day -1 ). The observed H 2 content in the plume is consistent with 23 previous estimates of redox conditions in the lava lake (~0.9 log units below the quartz-24Manuscript Click here to download Manuscript: BOV_Erebus H2_Text.docx Click here to view linked References M o u s s a l l a m e t a l .H 2 e m i s s i o n f r o m E r e b u s v o l c a n o P a g e | 2fayalaite-magnetite buffer). These measurements suggest that H 2 does not combust at the 25 surface of the lake, and that H 2 is kinetically inert in the gas/aerosol plume, retaining the 26 signature of the high-temperature chemical equilibrium reached in the lava lake. We also 27 observe a cyclical variation in the H 2 /SO 2 ratio with a period of ~10 min. These cycles 28 correspond to oscillatory patterns of surface motion of the lava lake that have been interpreted 29 as signs of a pulsatory magma supply at the top of the magmatic conduit. 30 31