8,624 Works

Supplementary material of IODP Site 342-U1410 and COSMOS model, supplement to: Vahlenkamp, Maximilian; Niezgodzki, Igor; De Vleeschouwer, David; Bickert, Torsten; Harper, Dustin T; Kirtland Turner, Sandra; Lohmann, Gerrit; Sexton, Philip F; Zachos, James C; Pälike, Heiko (2018): Astronomically paced changes in deep-water circulation in the western North Atlantic during the middle Eocene. Earth and Planetary Science Letters, 484, 329-340

Maximilian Vahlenkamp, Igor Niezgodzki, David De Vleeschouwer, Torsten Bickert, Dustin T Harper, Sandra Kirtland Turner, Gerrit Lohmann, Philip F Sexton, James C Zachos & Heiko Pälike
North Atlantic Deep Water (NADW) currently redistributes heat and salt between Earth's ocean basins, and plays a vital role in the ocean-atmosphere CO2 exchange. Despite its crucial role in today's climate system, vigorous debate remains as to when deep-water formation in the North Atlantic started. Here, we present datasets from carbonate-rich middle Eocene sediments from the Newfoundland Ridge, revealing a unique archive of paleoceanographic change from the progressively cooling climate of the middle Eocene. Well-defined...

Isotopic composition of benthic and planktic foraminifera and bulk sediment from ODP Holes198-1209A and 208-1265A, supplement to: Harper, Dustin T; Zeebe, Richard E; Hönisch, Bärbel; Schrader, Cindy D; Lourens, Lucas Joost; Zachos, James C (2018): Subtropical sea-surface warming and increased salinity during Eocene Thermal Maximum 2. Geology, 46(2), 187-190

Dustin T Harper, Richard E Zeebe, Bärbel Hönisch, Cindy D Schrader, Lucas Joost Lourens & James C Zachos
Eocene Thermal Maximum 2 (ETM-2; ca. 54.2 Ma) represents the second largest of the major Eocene hyperthermals, yet comparatively little is known about the scale and rate of climatic change for key regions. Here we provide the first detailed records of subtropical sea-surface warming and salinization for ETM-2 at two subtropical locations, Ocean Drilling Program Sites 1209 (North Pacific) and 1265 (South Atlantic). Coupled planktic foraminiferal Mg/Ca and δ18O indicate 2-4 °C of rapid warming...

Geochmistry and isotopic compositions of metavolcanic and metasedimentary rock-hosted minerals and serpentinite mud pore waters, recovered at the Mariana forearc during IODP Exp366, supplement to: Albers, Elmar; Bach, Wolfgang; Klein, Frieder; Menzies, C D; Lucassen, Friedrich; Teagle, Damon A H (accepted): Fluid–rock interactions in the shallow Mariana forearc: carbon cycling and redox conditions. Solid Earth Discussions, 1-41

Elmar Albers, Wolfgang Bach, Frieder Klein, C D Menzies, Friedrich Lucassen & Damon A H Teagle
Few data exist that provide insight into processes affecting the long-term carbon cycle at shallow forearc depths. To better understand the mobilization of carbon in sediments and crust of the subducting slab, we investigated carbonate materials that originate from the subduction channel at the Mariana forearc (

Planktic carbon and oxygen isotopes and NGR-derived K, U and Th data, supplement to: De Vleeschouwer, David; Auer, Gerald; Smith, Rebecca; Bogus, Kara; Christensen, Beth A; Groeneveld, Jeroen; Petrick, Benjamin F; Henderiks, Jorijntje; Castañeda, Isla S; O'Brian, Evan; Ellinghausen, Maret; Gallagher, Stephen John; Fulthorpe, Craig S; Pälike, Heiko (2018): The amplifying effect of Indonesian Throughflow heat transport on Late Pliocene Southern Hemisphere climate cooling. Earth and Planetary Science Letters, 500, 15-27

David De Vleeschouwer, Gerald Auer, Rebecca Smith, Kara Bogus, Beth A Christensen, Jeroen Groeneveld, Benjamin F Petrick, Jorijntje Henderiks, Isla S Castañeda, Evan O'Brian, Maret Ellinghausen, Stephen John Gallagher, Craig S Fulthorpe & Heiko Pälike
An unusually short glaciation interrupted the warm Pliocene around 3.3 Ma (Marine Isotope Stage (MIS) M2). Different hypotheses exist to explain why this glaciation event was so pronounced, and why the global climate system returned to warm Pliocene conditions relatively quickly afterwards. One of these proposed mechanisms is a reduced equator-to-pole heat transfer, in response to a tectonically reduced Indonesian Throughflow (ITF). The ITF is a critical part of the global thermohaline ocean circulation, transporting...

Georeferenced benthic photoquadrats captured annually from 2002-2017, distributed over Heron Reef flat and slope areas

Christiaan M Roelfsema, Eva M Kovacs, Douglas Stetner & Stuart R Phinn
Underwater georeferenced photo-transect surveys were conducted at different locations and using slightly different methodologies. Photoquadrats were collected with the purpose of determination of the benthic composition of each photoquadrat for subsequent use as georeferenced field data for calibration and validation purposes of benthic habitat maps derived from remote sensing satellite or airborne imagery. Transect location, direction and depth were chosen to characterise the variation of benthic cover types represented on coral reefs. Photoquadrat interval along...

Age model / tie points of ODP 1094 (1.5 Ma); δ18O, Mg/Ca, Mn/Ca of planktic and benthic foraminifera, sea surface and bottom water temperature, and δ18O of surface and bottom water of ODP Site 177-1094 (1.5 Ma), supplement to: Hasenfratz, Adam P; Jaccard, Samuel L; Martínez‐García, Alfredo; Sigman, Daniel M; Hodell, David A; Vance, Derek; Bernasconi, Stefano M; Kleiven, Helga F; Haumann, F Alexander; Haug, Gerald H (2019): The residence time of Southern Ocean surface waters and the 100,000-year ice age cycle. Science, 363(6431), 1080-1084

Adam P Hasenfratz, Samuel L Jaccard, Alfredo Martínez‐García, Daniel M Sigman, David A Hodell, Derek Vance, Stefano M Bernasconi, Helga F Kleiven, F Alexander Haumann & Gerald H Haug
All data are from core ODP 1094 recovered from the Antarctic Zone of the Southern Ocean (Atlantic sector).Age model of ODP 1094 (1.5Ma)dδ18O, Mg/Ca, Mn/Ca and Mg/Ca-derived sea surface temperature and surface water d18O based on down core measurements of planktic Neogloboquadrina pachyderma (sinistral) from core ODP 1094 (downcore data and averaged for MIS).δ18O, Mg/Ca, Mn/Ca and Mg/Ca-derived bottom water temperature and bottom water d18O based on down core measurements of benthic Melonis pompilioides from...

Biological data of Antarctic octopods collected during POLARSTERN cruises (size, weight, capture dates, depths), supplement to: Schwarz, Richard; Hoving, Henk-Jan T; Noever, Christoph; Piatkowski, Uwe (2019): Life histories of Antarctic incirrate octopods (Cephalopoda: Octopoda). PLoS ONE, 14(7), e0219694

Richard Schwarz, Henk-Jan T Hoving, Christoph Noever & Uwe Piatkowski
The data files contain biological information (sex, sizes, weights, etc.) from Antarctic octopod species collected during Polarstern cruises (Alfred Wegener Institute). The data is part of Richard Schwarz his Ph.D. thesis on age and growth of deep-sea and Antarctic octopods.

Sedimentary characteristics from permafrost cores in the Teshekpuk Lake Area on the Arctic Coastal Plain, Northern Alaska, supplement to: Fuchs, Matthias; Lenz, Josefine; Jock, Suzanne; Nitze, Ingmar; Jones, Benjamin M; Strauss, Jens; Günther, Frank; Grosse, Guido (2019): Organic Carbon and Nitrogen Stocks Along a Thermokarst Lake Sequence in Arctic Alaska. Journal of Geophysical Research-Biogeosciences, 124, 1230-1247

Matthias Fuchs, Josefine Lenz, Suzanne Jock, Ingmar Nitze, Benjamin M Jones, Jens Strauss, Frank Günther & Guido Grosse
This data set includes the data for the publication Fuchs et al. (2019), Organic carbon and nitrogen stocks along a thermokarst lake sequence in Arctic Alaska, doi:10.1029/2018JG004591. Impacts of successive thermokarst lake stages on soil organic carbon and nitrogen storage, Arctic Alaska. This study combines terrestrial and lacustrine cores to a depth of two meters for a carbon and nitrogen stock estimation in a heavily thermokarst affected study region as well as describes the landscape...

Early Meteorological Records from Latin-America and Caribbean during the 18th and 19th centuries, collection of data files, supplement to: Domínguez-Castro, Fernando; Vaquero, José Manuel; Gallego, María Cruz; Farrona, Ana María Marín; Antuña-Marrero, Juan Carlos; Cevallos, Elizabeth; García-Herrera, Ricardo; de la Guía, Cristina; Mejía, Raúl David; Naranjo, José; Prieto, Maria del Rosario; Ramos Guadalupe, Luis Enrique; Seiner, Lizardo; Trigo, Ricardo; Villacís, Marcos (2017): Early meteorological records from Latin-America and the Caribbean during the 18th and 19th centuries. Scientific Data, 4, 170169

Fernando Domínguez-Castro, José Manuel Vaquero, María Cruz Gallego, Ana María Marín Farrona, Juan Carlos Antuña-Marrero, Elizabeth Cevallos, Ricardo García Herrera, Cristina de la Guía, Raúl David Mejía, José Naranjo, Maria del Rosario Prieto, Luis Enrique Ramos Guadalupe, Lizardo Seiner, Ricardo Trigo & Marcos Villacís
Early instrumental observations are an important tool to understand multidecadal climate variability or put in context specific extreme phenomena. This paper provides early instrumental data recovered in Latin-America and the Caribbean. Data have been retrieved from 20 countries (Argentina, Bahamas, Belize, Brazil, British Guiana, Chile, Colombia, Costa Rica, Cuba, Ecuador, France (Martinique and Guadalupe), Guatemala, Jamaica, Mexico, Nicaragua, Panama, Peru, Puerto Rico, El Salvador and Suriname) and they cover the 18th and 19th centuries. The...

Weather pattern definitions for India and their daily historical classifications (1979 to 2016), supplement to: Neal, Robert; Robbins, Joanne; Dankers, Rutger; Mitra, Ashis; Jayakumar, A; Rajagopal, E N; Adamson, George (accepted): Deriving optimal weather pattern definitions for the representation of precipitation variability over India. International Journal of Climatology

Robert Neal, Joanne Robbins, Rutger Dankers, Ashis Mitra, A Jayakumar, E N Rajagopal & George Adamson
Mean u- and v- component wind fields at 850-hPa are provided over India for a set of 30 objectively derived weather patterns, which were generated by k-means clustering of daily (1200 UTC) reanalysis fields from ERA-interim between 1979 and 2016. The weather patterns are defined on a 1 x 1 degree resolution grid, which covers the area from 62 degrees west to 98 degrees west and 2 degrees north to 37 degrees north. The boundary...

Measurements of trace metal abundances and isotopes in carbonate sediments, Exuma, Bahamas, supplement to: Romaniello, Stephen J; Herrmann, Achim D; Anbar, Ariel D (2013): Uranium concentrations and 238U/235U isotope ratios in modern carbonates from the Bahamas: Assessing a novel paleoredox proxy. Chemical Geology, 362, 305-316

Stephen J Romaniello, Achim D Herrmann & Ariel D Anbar
In order to validate the use of 238U/235U as a paleoredox proxy in carbonates, we examined the incorporation and early diagenetic evolution of U isotopes in shallow Bahamian carbonate sediments. Our sample set consists of a variety of primary precipitates that represent a range of carbonate producing organisms and components that were important in the past (scleractinian corals, calcareous green and red algae, ooids, and mollusks). In addition, four short push cores were taken in...

Critical bed shear stress and threshold of motion of maërl biogenic gravel, supplement to: Joshi, Siddhi; Duffy, Garret; Brown, Colin (2017): Critical bed shear stress and threshold of motion of maerl biogenic gravel. Estuarine, Coastal and Shelf Science, 194, 128-142

Siddhi Joshi, Garret Duffy & Colin Brown
A determination of the critical bed shear stress of maerl is a prerequisite for quantifying its mobility, rate of erosion and deposition in conservation management. The critical bed shear stress for incipient motion has been determined for the first time for samples from biogenic free-living maerl beds in three contrasting environments (open marine, intertidal and beach) in Galway Bay, west of Ireland. The bed shear stress was determined using two methods, Law of the Wall...

Growth increment width measurement and SGIshell data, and COSMOS model simulations, supplement to: Walliser, Eric Otto; Lohmann, Gerrit; Niezgodzki, Igor; Schöne, Bernd R (2017): Inter-annual climate variability in Europe during the Oligocene icehouse. Palaeogeography, Palaeoclimatology, Palaeoecology, 475, 140-153

Eric Otto Walliser, Gerrit Lohmann, Igor Niezgodzki & Bernd R Schöne
New sclerochronological data suggest that a variability comparable to the North Atlantic Oscillation (NAO) was already present during the middle Oligocene, about 20 Myr earlier than formerly assumed. Annual increment width data of long-lived marine bivalves of Oligocene (30-25 Ma) strata from Central Europe revealed a distinct quasi-decadal climate variability modulated on 2-12 (mainly 3-7) year cycles. As in many other modern bivalves, these periodic changes in shell growth were most likely related to changes...

Physical oceanography, sea-bed photographs and videos of benthos from the Weddell Sea taken with remote operated vehicle CHEROKEE during POLARSTERN cruise ANT-XXIII/8, supplement to: Gutt, Julian; Barratt, Iain; Domack, Eugene W; d'Udekem d'Acoz, Cédric; Dimmler, Werner; Grémare, Antoine; Heilmayer, Olaf; Isla, Enrique; Janussen, Dorte; Jorgensen, Elaina; Kock, Karl-Hermann; Lehnert, Linn Sophia; López-Gonzáles, Pablo José; Langner, Stephanie; Linse, Katrin; Manjón-Cabeza, Maria Eugenia; Meißner, Meike; Montiel, Américo; Raes, Maarten; Robert, Henri; Rose, Armin; Schepisi, Elisabet Sañé; Saucède, Thomas; Scheidat, Meike; Schenke, Hans Werner; Seiler, Jan; Smith, Craig (2011): Biodiversity change after climate-induced ice-shelf collapse in the Antarctic. Deep Sea Research Part II: Topical Studies in Oceanography, 58(1-2), 74-83

Julian Gutt, Iain Barratt, Eugene W Domack, Cédric d'Udekem d'Acoz, Werner Dimmler, Antoine Grémare, Olaf Heilmayer, Enrique Isla, Dorte Janussen, Elaina Jorgensen, Karl-Hermann Kock, Linn Sophia Lehnert, Pablo José López-Gonzáles, Stephanie Langner, Katrin Linse, Maria Eugenia Manjón-Cabeza, Meike Meißner, Américo Montiel, Maarten Raes, Henri Robert, Armin Rose, Elisabet Sañé Schepisi, Thomas Saucède, Meike Scheidat, Hans Werner Schenke … & Craig Smith
The marine ecosystem on the eastern shelf of the Antarctic Peninsula was surveyed 5 and 12 years after the climate-induced collapse of the Larsen A and B ice shelves. An impoverished benthic fauna was discovered, that included deep-sea species presumed to be remnants from ice-covered conditions. The current structure of various ecosystem components appears to result from extremely different response rates to the change from an oligotrophic sub-ice-shelf ecosystem to a productive shelf ecosystem. Meiobenthic...

Neodymium isotopes from fossil fish teeth and detrital sediment, and oxygen isotopes from benthic forams from ODP Hole 119-738 B, supplement to: Scher, Howie D; Bohaty, Steven M; Smith, Brian W; Munn, Colin B (2014): Isotopic interrogation of a suspected late Eocene glaciation. Paleoceanography, 29(6), 628-644

Howie D Scher, Steven M Bohaty, Brian W Smith & Colin B Munn
Ephemeral polar glaciations during the middle-to-late Eocene (48-34 Ma) have been proposed based on far-field ice volume proxy records and near-field glacigenic sediments, although the scale, timing, and duration of these events are poorly constrained. Here we confirm the existence of a transient cool event within a new high-resolution benthic foraminiferal d18O record at Ocean Drilling Program (ODP) Site 738 (Kerguelen Plateau; Southern Ocean). This event, named the Priabonian oxygen isotope maximum (PrOM) Event, lasted...

Arctica islandica chronologies from Fladen Ground, supplement to: Butler, Paul G; Richardson, Christopher A; Scourse, James D; Witbaard, Rob; Schöne, Bernd R; Fraser, Nicole M; Wanamaker, Alan D; Bryant, Charlotte L; Harris, Ian; Robertson, Iain (2009): Accurate increment identification and the spatial extent of the common signal in five Arctica islandica chronologies from the Fladen Ground, northern North Sea. Paleoceanography, 24(2), PA2210

Paul G Butler, Christopher A Richardson, James D Scourse, Rob Witbaard, Bernd R Schöne, Nicole M Fraser, Alan D Wanamaker, Charlotte L Bryant, Ian Harris & Iain Robertson
The creation of networks of shell-based chronologies which can provide regionally extensive high-resolution proxies for the marine environment depends on the spatial extent of the common environmental signal preserved in the shell banding and on the reliability of the dating model. Here Arctica islandica chronologies from five neighboring sites in the North Sea are compared, and the strength of the common environmental signal across distances up to 80 km is analyzed using statistical techniques derived...

Investigations on fossil bivalves and wood from Seymour Island, Antarctica, supplement to: Ivany, Linda C; Brey, Thomas; Huber, Matthew; Buick, Devin P; Schöne, Bernd R (2011): El Niño in the Eocene greenhouse recorded by fossil bivalves and wood from Antarctica. Geophysical Research Letters, 38, L16709

Linda C Ivany, Thomas Brey, Matthew Huber, Devin P Buick & Bernd R Schöne
Quasi-periodic variation in sea-surface temperature, precipitation, and sea-level pressure in the equatorial Pacific known as the El Niño - Southern Oscillation (ENSO) is an important mode of interannual variability in global climate. A collapse of the tropical Pacific onto a state resembling a so-called 'permanent El Niño', with a preferentially warmed eastern equatorial Pacific, flatter thermocline, and reduced interannual variability, in a warmer world is predicted by prevailing ENSO theory. If correct, future warming will...

Physical oceanography during two METEOR cruises in the subpolar North Atlantic, supplement to: Stendardo, Ilaria; Kieke, Dagmar; Rhein, Monika; Gruber, Nicolas; Steinfeldt, Reiner (2015): Interannual to decadal oxygen variability in the mid-depth water masses of the eastern North Atlantic. Deep Sea Research Part I: Oceanographic Research Papers, 95, 85-98

Ilaria Stendardo, Dagmar Kieke, Monika Rhein, Nicolas Gruber & Reiner Steinfeldt
The detection of multi-decadal trends in the oceanic oxygen content and its possible attribution to global warming is protracted by the presence of a substantial amount of interannual to decadal variability, which hitherto is poorly known and characterized. Here we address this gap by studying interannual to decadal changes of the oxygen concentration in the Subpolar Mode Water (SPMW), the Intermediate Water (IW) and the Mediterranean Outflow Water (MOW) in the eastern North Atlantic. We...

Hyperspectral reflectance, gas exchange and meteorological conditions in grassland plots undergoing different fertilization regimes in Central Portugal from March to June 2016, supplement to: Cerasoli, Sofia; Campagnolo, Manuel; Faria, Joana; Nogueira, Carla; Caldeira, Maria Conceição (2018): On estimating the gross primary productivity of Mediterranean grasslands under different fertilization regimes using vegetation indices and hyperspectral reflectance. Biogeosciences, 15(17), 5455-5471

Sofia Cerasoli, Manuel Campagnolo, Joana Faria, Carla Nogueira & Maria Conceição Caldeira
We applied an empirical modelling approach for gross primary productivity (GPP) estimation from hyperspectral reflectance of Mediterranean grasslands undergoing different fertilization treatments. The objective of the study was to identify combinations of vegetation indices and bands that best represent GPP changes between the annual peak of growth and senescence dry out in Mediterranean grasslands.In situ hyperspectral reflectance of vegetation and CO2 gas exchange measurements were measured concurrently in unfertilized (C) and fertilized plots with added...

Sea surface temperatures from the Western Pacific Warm Pool across the last 17kyrs, supplement to: Moffa-Sanchez, Paola; Rosenthal, Yair; Babila, Tali L; Mohtadi, Mahyar; Zhang, Xu (accepted): Temperature evolution of the Indo‐Pacific Warm Pool over the Holocene and the last deglaciation. Paleoceanography and Paleoclimatology

Paola Moffa-Sanchez, Yair Rosenthal, Tali L Babila, Mahyar Mohtadi & Xu Zhang
The Indo-Pacific Warm Pool (IPWP) contains the warmest surface ocean waters on our planet. Changes in the extent and position of the IPWP likely impacted the tropical and global climate in the past. To put recent ocean changes into a longer temporal context, we present new paleoceanographic sea surface temperature reconstructions from off Papua New Guinea (RR1313-23PC: 4.4939°S, 145.6703°E, 712 m water depth) which is at the heart of the Western Pacific Warm Pool (WPWP),...

Shoreline survey data collected at Rialto and Kalaloch Beaches, Washington State, 2018-2019

Ian Miller
Data were collected using GNSS survey methods, with a differential GPS operating in Real Time Kinematic (RTK) mode. All data were collected with an AshTech ProMark 200 RTK-DGPS system connected to the Washington State Reference Network. Horizontal positions are referenced to NAD83(2011) and the vertical data are referenced to NAVD88(Geoid09). All survey data were collected with the GNSS system mounted on a 2.05 m rover pole, held level as a transect line was traced in...

Physical oceanography from the TRACTOR project

TRACTOR Members, Truls Johannessen, Frank Cleveland, Yoshie Kasajima, Jane O'Dwyer & Héðinn Valdimarsson
Primary Objectives- Describe and quantify the present strength and variability of the circulation and oceanic processes of the Nordic Seas regions using primarily observations of the long term spread of a tracer purposefully released into the Greenland Sea Gyre in 1996.- Improve our understanding of ocean processes critical to the thermaholine circulation in the Nordic Seas regions so as to be able to predict how this region may respond to climate change.- Assess the role...

Surface Ocean CO2 Atlas (SOCAT) V6

Dorothee C E Bakker, Siv K Lauvset, Rik Wanninkhof, Rocío Castaño-Primo, Kim I Currie, Stephen D Jones, Camilla S Landa, Nicolas Metzl, Shin-Ichiro Nakaoka, Yukihiro Nojiri, Isao Nonaka, Kevin M O'Brien, Are Olsen, Benjamin Pfeil, Denis Pierrot, Ute Schuster, Karl Smith, Kevin Sullivan, Adrienne Sutton, Bronte Tilbrook, Simone Alin, Meike Becker, Alice Benoit-Cattin, Randy Bott, Yann Bozec … & Suqing Xu
The Surface Ocean CO2 Atlas (SOCAT) is a synthesis activity by the international marine carbon research community (>100 contributors). SOCAT version 6 has 23.4 million quality-controlled, surface ocean fCO2 (fugacity of carbon dioxide) observations from 1957 to 2017 for the global oceans and coastal seas. Calibrated sensor data are also available. Automation allows annual, public releases. SOCAT data is discoverable, accessible and citable. SOCAT enables quantification of the ocean carbon sink and ocean acidification and...

GAMDAM glacier inventory for High Mountain Asia, supplement to: Sakai, Akiko (accepted): Brief Communication: Updated GAMDAM Glacier Inventory over the High Mountain Asia. The Cryosphere Discussions, 1-12

Akiko Sakai
First version of GAMDAM (Glacier Area Mapping for Discharge from the Asian Mountains) glacier inventory are the first glacier inventory covering the HMA (High Mountain Asia), and underestimated glacier area because they did not include steep slopes covered with ice or snow and shadow part. In the process of revision of GAMDAM glacier inventory, source Landsat images are carefully selected in order to find shadow-free, cloud cover-free and seasonal snow cover-free images taken from 1990...

Tracer concentrations and meteorological observations from the Bolzano Tracer EXperiment (BTEX)

Marco Falocchi, Werner Tirler, Lorenzo Giovannini, Elena Tomasi, Gianluca Antonacci & Dino Zardi
The data set contains ground concentrations and related meteorological measurements collected during the field campaign of the Bolzano Tracer EXperiment (BTEX).The experiment was performed to characterize the dispersion of pollutants emitted by a waste incinerator in the basin of the city of Bolzano in the Alps.As part of the experiment two controlled releases of a passive gas tracer (sulfur hexafluoride, SF6) were performed through the stack of the incinerator on 14 February 2017 at two...

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