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626 results for “Methanation”
FIGURES 43–45 in New species of Thyasiridae from a methane seepage area off Concepción, Chile
FIGURES 43–45. Conchocele sp. indet. Station AGT 6, northwest off the Bay of Concepción, southcentral Chile; 36°22.15 S, 73°42.85 W; 780m depth, Coll. J. Sellanes & NMW.Z.2005.4.5.
FIGURE 6 in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 6. Alvinocaris sp. Ovigerous female (CL 7.1 mm; LACM CR 2001032.5) from the Blake Ridge Diapir, northwestern Atlantic. A, carapace and cephalic appendages, lateral view; B, anterior part of carapace and cephalic appendages, dorsal view; C, posterior part of telson, dorsal view; D, first pereopod, lateral view.
FIGURE 4. Alvinocaris methanophila n in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 4. Alvinocaris methanophila n. sp. A–C, paratype male (CL 6.8 mm; LACM 2001 030.2); D, E, nontype, juvenile (CL 4.7 mm; LACM) from the Blake Ridge Diapir, northwestern Atlantic. A, D, carapace and cephalic appendages, in lateral view; B, endopod of first pleopod, ventral view; C, appendices interna and masculina of second pleopod, mesial view; E, chela of first pereopod, outer view.
FIGURE 2. Alvinocaris methanophila n in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 2. Alvinocaris methanophila n. sp. Holotype ovigerous female (CL 12.8 mm; LACM 2001030.1) from the Blake Ridge Diapir, northwestern Atlantic. Left appendages. A, antennal scale, dorsal view (marginal setae omitted); B, mandible, dorsal view; C, maxillule, ventral view; D, maxilla, ventral view; E, first maxilliped, ventral view; F, second maxilliped, ventral view; G, third maxilliped, lateral view; H, same, distal part of ultimate segment, lateral view (setae omitted); I, same, basal part of antepenultimate segment and coxa, dorsal view; J, telson and right uropod, dorsal view (marginal setae on uropod omitted); K, posterior part of telson, dorsal view.
FIGURE 1. Alvinocaris methanophila n in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 1. Alvinocaris methanophila n. sp. Holotype ovigerous female (CL 12.8 mm; LACM 2001030.1) from the Blake Ridge Diapir, northwestern Atlantic. A, carapace and cephalic appendages, lateral view; B, carapace, dorsal view; C, anterior part of carapace and eye, lateral view; D, anterior part of carapace and cephalic appendages, dorsal view (setae partially omitted); E, abdomen, lateral view (setae and eggs omitted).
FIGURE 3. Alvinocaris methanophila n in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 3. Alvinocaris methanophila n. sp. Holotype ovigerous female (CL 12.8 mm; LACM 2001030.1) from the Blake Ridge Diapir, northwestern Atlantic. Left pereopods. A, first pereopod, lateral view; B, same chela, inner view; C, same, carpus, mesial view; D, second pereopod, lateral view; E, same, chela, outer view; F, third pereopod, lateral view; G, same, dactylus and distal part of propodus, lateral view; H, fourth pereopod, lateral view; I, fifth pereopod, lateral view; J, same, dactylus and distal part of propodus, lateral view.
FIGURE 7. Alvinocaris muricola Williams, 1988 in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 7. Alvinocaris muricola Williams, 1988. Female (CL 12.6 mm; LACM CR 2001034.2) from the Blake Ridge Diapir. A, carapace and cephalic appendages, lateral view (antennular and antennal flagella omitted); B, anterior part of carapace and cephalic appendages, dorsal view (antennular flagella omitted); C, left antennal scale, dorsal view (marginal setae omitted).
FIGURE 5 in A new species of Alvinocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) and a new record of A. muricola from methane seeps on the Blake Ridge Diapir, Northwestern Atlantic
FIGURE 5. Scatter plot of the relative length of the rostrum (indicated by rostral length/carapace length against carapace length) between female A. methanophila n. sp. and female A. muricola Williams, 1988.
Data from: Warming and eutrophication interactively drive changes in the methane-oxidizing community of shallow lakes
<p>Freshwater ecosystems are the largest natural source of the greenhouse gas methane (CH<sub>4</sub>), with shallow lakes a particular hot spot. Eutrophication and warming generally increase lake CH<sub>4</sub> emissions but their impacts on the sole biological methane sink - methane oxidation - and methane-oxidizer community dynamics are poorly understood. We used the world's longest-running freshwater climate-change mesocosm experiment to determine how methane-oxidizing bacterial (MOB) abundance and composition, and methane oxidation potential in the sediment respond to eutrophication, short-term nitrogen addition and warming. After nitrogen addition, MOB abundance and methane oxidation potential increased, while warming increased MOB abundance without altering methane oxidation potential. MOB community composition was driven by both temperature and nutrient availability. Eutrophication increased relative abundance of type I MOB <i>Methyloparacoccus</i>. Warming favoured type II MOB <i>Methylocystis</i> over type I MOB<i> Methylomonadaceae</i>, shifting the MOB community from type I dominance to type I and II co-dominance, thereby altering MOB community traits involved in growth and stress-responses. This shift to slower-growing MOB may explain why higher MOB abundance in warmed mesocosms did not coincide with higher methane oxidation potential. Overall, we show that eutrophication and warming differentially change the MOB community, resulting in an altered ability to mitigate CH<sub>4</sub> emissions from shallow lakes.</p>
Raw spectroscopic data for "Cage effects control the mechanism of methane hydroxylation in zeolites"
<p>This Excel spreadsheet contains all Mössbauer and resonance Raman data presented in the main text of Snyder et al., Science 2021.</p>
Supplementary data for "Beyond radical-rebound: Methane oxidation to methanol catalyzed by iron species in metal–organic framework nodes"
<p>Cartesian coordinates in the *.XYZ format for all the structures optimized at the M06-L/def2-TZVP in the reactivity study as part of the article "Beyond radical-rebound: Methane oxidation to methanol catalyzed by iron species in metal-organic framework nodes" (<a href="https://doi.org/10.1021/jacs.1c04766">https://doi.org/10.1021/jacs.1c04766</a>)</p>
Supplementary Data for "Hydrate Formation on Marine Seep Bubbles and the Implications for Water Column Methane Dissolution"
<p>This data deposit contains the data necessary to reproduce results presented in the paper "Hydrate Formation on Marine Seep Bubbles and the Implications for Water Column Methane Dissolution", to appear in JGR Oceans. </p> <p>The files "Fu_AGUSupplementary_S11.xlsx" and "Fu_AGUSupplementary_S12.xlsx" are referenced in the supplement of the original paper. </p> <p>The file "Fu_AGUSupplementary_additionalDATA.xlsx" contains all the data and inputs used to create Figure 14, 15 and 16 of the original manuscript.</p>
Data from: Worms and submersed macrophytes reduce methane release and increase nutrient removal in organic sediments
<p>We investigated how the co-presence of macrophytes and macroinvertebrates in organic substrates lowers methane emissions and nutrient transport, due to radial oxygen loss and bioirrigation. Laboratory incubations were performed to measure ebullitive methane fluxes and dissolved gas and nutrient fluxes from sediments in presence of macrophytes and macrofauna.</p>
Quantification of methane emissions from indoor-fed Fogera dairy cows using laser methane detector
<p>Using the laser methane detector (LMD) in a respiration chamber (Linze Grassland Agriculture Trial Station, Lanzhou University, Gansu Province, China).</p>
Quantification of methane emissions from indoor-fed Fogera dairy cows using laser methane detector
<p>Using the laser methane detector to measure the methane emissions from Fogera dairy cows (Andassa Livestock Research Center, Amhara Region Agricultural Research Institute, Ethiopia).</p>
High-resolution (10 km × 10 km) anthropogenic methane emissions in China in 2020
<p>This dataset is a comprehensive and bottom-up estimate of China's anthropogenic CH4 emissions in 2020 from 45 sub-sectors and ~130,000 point sources. Generally, we classify all sources into two major categories: fossil-fuel system and food system. Fossil-fuel system releases CH4 emissions throughout the fossil-fuel related activities, which contains coal/gas/oil supply chain and fossil-fuel related waste management in this study. Food system contains rice cultivation, livestock, biomass burning and food-related waste management in this study. We allocate the annual CH4 emissions in 2020 at a spatial resolution of 0.1° × 0.1° (nearly 10km ×10km), wherein emissions from point sources are precisely allocated at their location information. The remaining anthropogenic sources in provincial level are allocated by the corresponding surrogate indexes, such as gridded gross domestic product (GDP), population, cultivated area and the source-specific surrogate indexes.</p>
Dataset for Thermal Properties of Pressure Core Samples Recovered from Nankai Trough Wells Before and After Methane Hydrate Dissociation
<p>This dataset is for the research article titled Thermal Properties of Pressure Core Samples Recovered from Nankai Trough Wells Before and After Methane Hydrate Dissociation published in Earth and Space Science.</p>
Methane emissions in seagrass meadows as a small offset to carbon sequestration
<p>Station P: Masterfile includes environmental data and CO2, CH4 and radon concentration at Station P </p> <p>Station S: Masterfile includes the environmental data and CO2, CH4 and radon concentration at Station S </p> <p>Sediment Core: Master file includes the porewater DIC and CH4 concentration</p> <p>Survey: Master file of spatial survey includes GPS location, CH4 concentration </p>
Data for "Femtosecond Symmetry Breaking and Coherent Relaxation of Methane Cations via X-ray Spectroscopy"
<p>This repository contains all the data and scripts needed to obtain the figures reported in the manuscript.</p> <p>The experimental data are processed using Matlab R2022a. </p>
SCICHEM data for methane dispersion in the Permian Basin
<p>This dataset contains the input (meteorological and terrain) and output data (raw concentration output, calculated methane columns) from SCICHEM used in the pre-print article "Using Frequent, High-Resolution Remote Sensing to Identify Intermittent and Overlapping CH<sub>4</sub> sources in Oil and Gas Development Regions" to be submitted to <em>Journal of Geophysical Research - Atmosphere</em>.</p> <ul> <li>The meteorological input data for SCICHEM (https://github.com/epri-dev/SCICHEM) is included in the zipped file "MET_INPUT.zip" and includes the files <ul> <li>METSCI2016.SFC - surface met file</li> <li>METSCI2016.PRF - upper air met file</li> </ul> </li> <li>The terrain input data for SCICHEM is included in the file "TERRAIN_INPUT.zip" and includes the files <ul> <li>ter.inp - the input file for the SCICHEM preprocessor TERSCI. The references NED data can be downloaded from http://www.mrlc.gov/viewerjs/ (seamless GeoTiff) or ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/NED (ArcGrid)</li> <li>terrain.ter - the SCICHEM input file produced by TERSCI</li> <li>*.out - log files produced by TERSCI</li> </ul> </li> <li>The raw output for the continuous methane source tests are in the file "continuous_rel_case.zip". This folder contains several comma separated value (CSV) files with the following columns <ul> <li>x - UTM east-west coordinates in m (corresponding to the projection used in the TERSCI terrain preprocessor)</li> <li>y - UTM north-south coordinates in m</li> <li>z - height above ground level (m)</li> <li>c - enhanced methane concentration in µg m<sup>-3</sup></li> <li>t - time in the format YYYYMMDDHHMMSS</li> </ul> </li> <li>The raw output for the instantaneous methane source tests are in the file "instantaneous_rel_case.zip". This folder contains several comma separated value (CSV) files with the following columns <ul> <li>x - UTM east-west coordinates in m (corresponding to the projection used in the TERSCI terrain preprocessor)</li> <li>y - UTM north-south coordinates in m</li> <li>z - height above ground level (m)</li> <li>c - enhanced methane concentration in µg m<sup>-3</sup></li> <li>t - time in the format YYYYMMDDHHMMSS</li> </ul> </li> <li>The processed columns for the continuous methane source tests are in the file "CALC_METHANE_COL_OUTPUT.zip", which contains two CSV files for the continuous and instantaneous releases with the following columns <ul> <li>x - UTM east-west coordinates in m</li> <li>y - UTM north-south coordinates in m</li> <li>t - time in the format YYYYMMDDHHMMSS</li> <li>BG_mask - TRUE if location was used in background calculation for plume mask</li> <li>tcol_g_m2_with_bg_and_no_noise - total (enhanced plus background) methane column (g m<sup>-2</sup>)</li> <li>tcol_g_m2_with_bg_and_half_pct_noise - the total methane column with 0.5% Gaussian noise added (g m<sup>-2</sup>)</li> <li>plume_mask - TRUE if region was tentatively identified as within the plume using the t-test</li> <li>median_filt_mask - TRUE if region was tentatively identified as within the plume after the median filter was applied</li> <li>final_filtered_plume - TRUE if region was identified as within the plume after all filters were applied</li> </ul> </li> </ul>
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International Brain Laboratory public data
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OpenNeuro
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