<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_987321</Entry_ID>
<Entry_Title>Total mercury, monomethylmercury, and total carbon in sediments from the Southern Ocean and South Sandwich Trench during the PS133/1 expedition (3 – 9 November 2022)</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Pérez-Rodríguez, Marta; Biester, Harald; Wenzhöfer, Frank; Glud, Ronnie N</Dataset_Creator>
<Dataset_Title>Total mercury, monomethylmercury, and total carbon in sediments from the Southern Ocean and South Sandwich Trench during the PS133/1 expedition (3 – 9 November 2022)</Dataset_Title>
<Dataset_Release_Date>2026</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.987321</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Marta</First_Name>
<Last_Name>Pérez-Rodríguez</Last_Name>
<Email>m.perez-rodriguez@tu-braunschweig.de</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Event label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>DATE/TIME</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LATITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LONGITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>ELEVATION</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>DEPTH, sediment/rock</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Depth, top/min</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Depth, bottom/max</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Mercury</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Monomethylmercury</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Carbon, total</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>Hadal trench</Keyword>
<Keyword>Mercury</Keyword>
<Keyword>Methylmercury</Keyword>
<Keyword>MultiCorer</Keyword>
<Keyword>PS133/1</Keyword>
<Keyword>PS133/1_15-5</Keyword>
<Keyword>PS133/1_16-1</Keyword>
<Keyword>PS133/1_17-2</Keyword>
<Keyword>PS133/1_9-22</Keyword>
<Keyword>South Georgia Island</Keyword>
<Keyword>South Sandwich Islands</Keyword>
<Keyword>South Sandwich Trench</Keyword>
<Sensor_Name>
<Long_Name>Thermal decomposition amalgamation - atomic absorption spectrometer (TDA AAS), Milestone, DMA-80</Long_Name>
</Sensor_Name>
<Sensor_Name>
<Long_Name>Gas chromatograph - cold vapor atomic fluorescence spectrometery (GC-CVAFS), Brooks Rand, Methylmercury Manual System</Long_Name>
</Sensor_Name>
<Sensor_Name>
<Long_Name>Elemental analyser (EA), HEKAtech, Euro EA 3000</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>Polarstern</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>2022-11-03</Start_Date>
<Stop_Date>2022-11-09</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>-56.24056</Southernmost_Latitude>
<Northernmost_Latitude>-51.30116</Northernmost_Latitude>
<Westernmost_Longitude>-39.92533</Westernmost_Longitude>
<Easternmost_Longitude>-24.83905</Easternmost_Longitude>
</Spatial_Coverage>
<Access_Constraints>access rights needed</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends)</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>339 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Biester, Harald Uwe; Pérez-Rodríguez, Marta; Calean, Adelina; Sindlev, Marco B; Pakhomov, Evgeny A; Lüskow, Florian; Stimac, Ingrid; Trimborn, Scarlett; Dufour, Aurélie; Torres-Rodriguez, Natalia; Heimbürger-Boavida, Lars-Eric; Wenzhöfer, Frank; Glud, Ronnie N (2026): Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean. Global Biogeochemical Cycles, 40(1), e2025GB008767, https://doi.org/10.1029/2025GB008767</Reference>
<Summary>Sediment cores for total mercury (Hg), monomethylmercury (MMHg), and total carbon (TC) were collected in the Southern Ocean and the South Sandwich Trench between 3 and 9 November 2022 during the PS133/1 expedition. Sampling depths ranged from approximately 3700 to 8000 m, using a multicorer (MUC) system. Total Hg concentrations were determined by thermal decomposition, amalgamation, and atomic absorption spectrophotometry (TDA–AAS) using a DMA-80 Direct Mercury Analyzer (Milestone). Monomethylmercury (MMHg) was analyzed by gas chromatography–cold vapor atomic fluorescence spectrometry (GC–CVAFS) following ethylation with sodium tetraethylborate on a KOH-digested aliquot, using a Brooks Rand manual system. Total carbon (TC) was measured using an elemental analyzer Euro EA 3000 (HEKAtech GmbH). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.987321"!</Summary>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/Elevation</URL>
<Description>ELEVATION</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LATITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LONGITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_8601</URL>
<Description>DATE/TIME</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.1029/2025GB008767</URL>
<Description>Dissolved and Particulate Methylated Mercury in a Highly Productive Area of the Southern Ocean</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.17815/jlsrf-3-163</URL>
<Description>Polarstern</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date/>
<Last_DIF_Revision_Date>2026-04-29</Last_DIF_Revision_Date>
</DIF>
