Mapping Beaufort Sea Topography and Geophysical Settings Using High-Resolution Geospatial Data and GMT

• Main Author: Lemenkova, Polina
• Other Authors: Ocean University of China (OUC)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2020
• Subjects: Beaufort Sea; Arctic Ocean; GMT; cartography; data integration; ACM: K.: Computing Milieux; ACM: K.: Computing Milieux/K.3: COMPUTERS AND EDUCATION; ACM: H.: Information Systems/H.3: INFORMATION STORAGE AND RETRIEVAL; ACM: H.: Information Systems/H.4: INFORMATION SYSTEMS APPLICATIONS; ACM: H.: Information Systems/H.5: INFORMATION INTERFACES AND PRESENTATION (e.g.; HCI); ACM: K.: Computing Milieux/K.3: COMPUTERS AND EDUCATION/K.3.2: Computer and Information Science Education; ACM: K.: Computing Milieux/K.3: COMPUTERS AND EDUCATION/K.3.1: Computer Uses in Education; ACM: K.: Computing Milieux/K.6: MANAGEMENT OF COMPUTING AND INFORMATION SYSTEMS; ACM: K.: Computing Milieux/K.7: THE COMPUTING PROFESSION; ACM: H.: Information Systems; ACM: H.: Information Systems/H.1: MODELS AND PRINCIPLES; [INFO]Computer Science [cs]; [INFO.INFO-GR]Computer Science [cs]/Graphics [cs.GR]; [INFO.INFO-LG]Computer Science [cs]/Machine Learning [cs.LG]; [INFO.INFO-HC]Computer Science [cs]/Human-Computer Interaction [cs.HC]; [INFO.INFO-IR]Computer Science [cs]/Information Retrieval [cs.IR]; [SDU.OCEAN]Sciences of the Universe [physics]/Ocean; Atmosphere; [SDU.STU]Sciences of the Universe [physics]/Earth Sciences; [SDU.STU.AG]Sciences of the Universe [physics]/Earth Sciences/Applied geology; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph]; [SDU.STU.GM]Sciences of the Universe [physics]/Earth Sciences/Geomorphology; [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces; environment; [SDE]Environmental Sciences; [SDE.IE]Environmental Sciences/Environmental Engineering; Arctic; Canada; Canadian Arctic Archipelago; Chukchi Sea; Mackenzie River; Archipelago; Arctic Archipelago; Chukchi; Mackenzie river; Alaska
• Online Access: https://hal.archives-ouvertes.fr/hal-02916437; https://hal.archives-ouvertes.fr/hal-02916437/document; https://hal.archives-ouvertes.fr/hal-02916437/file/lemenkova.pdf; https://doi.org/10.17846/GI.2020.24.1.4-18

International audience The papers presents an integrated processing of the high-resolution thematic data covering the area of the Beaufort Sea, a marginal sea of the Arctic Ocean, northern Canada and Alaska. Five thematic maps of the Beaufort Sea, Arctic Ocean are presented. The cartographic techniques were performed by Generic Mapping Tools (GMT) scripting toolset. The methodology presents the integration of the multi-source high-resolution thematic datasets: bathymetric GEBCO, IBCAO, topographic GLOBE, sediment thickness GlobSed, EGM2008 geoid model, GMT vector layers and geophysical gravity model from CryoSat-2 and Jason-1. There is an agreement with the data by their inspection and analysis of grids correlation. The bathymetric map demonstrated variations in depths with rapidly decreasing values in the Mackenzie River coasts, depicting the basin of the Beaufort Sea, large shelf in the Canadian Arctic Archipelago and western part bordering the Chukchi Sea. The GDAL inspection shows that the GEBCO-based topography ranges between -3,973 m to 2,578 m. Gravity data shows that coastal areas in northern Canada and Alaska have values >20 mGal while the basin of the Beaufort Sea is dominated by the lower values at -65 to -45 mGal; the data range is from -155.097 to 366.939 mGal. The marine free-air gravity fields and geoid data demonstrate correlation with topographic isolines of the region. The data range for the sediment thickness is from 0.00 to 18064.53 m having maximal data at the Mackenzie River discharge area. A comprehensive compilation of the data on the Beaufort Sea visualized using GMT presents more insights into its bathymetric structure and geophysical fields distribution in context of the variability of the geological settings.