<?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_994783</Entry_ID>
<Entry_Title>Master tracks in different resolutions of ALKOR cruise AL649, Kiel - Kiel, 2026-04-11 - 2026-04-13</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Rudnick, Hanna</Dataset_Creator>
<Dataset_Title>Master tracks in different resolutions of ALKOR cruise AL649, Kiel - Kiel, 2026-04-11 - 2026-04-13</Dataset_Title>
<Dataset_Release_Date>2026-05-13</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.994783</Online_Resource>
</Data_Set_Citation>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<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>Speed</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Course</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>AL649</Keyword>
<Keyword>AL649-track</Keyword>
<Keyword>Underway cruise track measurements</Keyword>
<Sensor_Name>
<Long_Name>Calculated</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>Alkor (1990)</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>2026-04-11</Start_Date>
<Stop_Date>2026-04-13</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>54.141326</Southernmost_Latitude>
<Northernmost_Latitude>54.707269</Northernmost_Latitude>
<Westernmost_Longitude>10.011759</Westernmost_Longitude>
<Easternmost_Longitude>11.837011</Easternmost_Longitude>
</Spatial_Coverage>
<Project>
<Short_Name>DAM_Underway</Short_Name>
<Long_Name>DAM Underway Research Data</Long_Name>
</Project>
<Project>
<Short_Name>DataHub</Short_Name>
<Long_Name>DataHub Earth and Environment of the Helmholtz Association</Long_Name>
</Project>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Originating_Center>GEOMAR - Helmholtz Centre for Ocean Research Kiel</Originating_Center>
<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>610 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Generalized master track of ALKOR cruise AL649 (URI: https://download.pangaea.de/reference/139918/attachments/AL649_mastertrack_generalized.zip)</Reference>
<Reference>Rudnick, Hanna (2026): Master track of ALKOR cruise AL649 in 1 sec resolution (zipped, 8 MB) [dataset]. GEOMAR - Helmholtz Centre for Ocean Research Kiel, PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994784</Reference>
<Reference>Processing report for navigation sensors from ALKOR cruise AL649 (URI: https://download.pangaea.de/reference/139920/attachments/AL649_nav.pdf)</Reference>
<Reference>Event list of ALKOR cruise AL649 (URI: https://www.pangaea.de/expeditions/events/AL649)</Reference>
<Reference>Trackline map of navigation sensors from ALKOR cruise AL649 (URI: https://download.pangaea.de/reference/139921/attachments/AL649_nav.png)</Reference>
<Summary>Raw data acquired by position sensors on board RV Alkor during expedition AL649 were processed to receive a validated master track which can be used as reference of further expedition data. During AL649 data from the Seapath 330 system, the Furuno GP-170 receiver and the SAAB R6 system were used to calculate the mastertrack. Data were downloaded from DAVIS SHIP data base (https://https://dship.o2a-data.de/)  with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.994783"! ** This dataset contains the master track in 10 min resolution, for other resolutions please see "Other version" references.</Summary>
<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.pangaea.de/10.1594/PANGAEA.994784</URL>
<Description>Master track of ALKOR cruise AL649 in 1 sec resolution (zipped, 8 MB)</Description>
</Related_URL>
<Related_URL>
<URL>https://helmholtz.software/projects/datahub</URL>
<Description>DataHub</Description>
</Related_URL>
<Related_URL>
<URL>https://www.allianz-meeresforschung.de/kernbereiche/datenmanagement-und-digitalisierung#unterwegs</URL>
<Description>DAM_Underway</Description>
</Related_URL>
<Related_URL>
<URL>https://www.pangaea.de/expeditions/events/AL649</URL>
<Description>Event list of ALKOR cruise AL649</Description>
</Related_URL>
<Related_URL>
<URL>https://www2.bsh.de/aktdat/dod/fahrtplanung/Alkor.htm</URL>
<Description>Alkor (1990)</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-05-13</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-05-13</Last_DIF_Revision_Date>
</DIF>
