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dc.contributor.authorFegyveresi, John M.
dc.contributor.authorFudge, Tyler Jeffrey.
dc.contributor.authorFerris, David G.
dc.contributor.authorWinski, Dominic A.
dc.contributor.authorAlley, Richard B.
dc.date.accessioned2019-07-10T19:39:19Z
dc.date.available2019-07-10T19:39:19Z
dc.date.issued2019-07
dc.identifier.govdocERDC/CRREL TR-19-10
dc.identifier.urihttps://hdl.handle.net/11681/33378
dc.identifier.urihttp://dx.doi.org/10.21079/11681/33378
dc.descriptionTechnical Report
dc.description.abstractWe present an initial chronology for the newly drilled South Pole Ice Core (SPICEcore). Annual layers observed in the visual stratigraphy of the upper 735 m indicate a total ice age chronology of 10,235 ± 51 BP (years be-fore 1950), with a total average accumulation rate of approximately 7.4 cm a⁻¹we. Comparing electrical conductivity measurement peaks in the core with known volcanic events observed in other Antarctic ice cores corroborates these estimates. This history shows accumulation trends, which could indicate past climatological or glaciological changes at the site. Specifically, one 1600-year interval between 6700 and 5100 years BP experienced a higher-than-average accumulation rate (~8.1 cm a⁻¹we) while one 700-year interval from 3100 to 2400 years BP experienced a lower-than-average accumulation rate (~6.4 cm a⁻¹we). We used seasonal equivalent coarse-grained and depth-hoar layers to identify the annual “picks” (noted as summers); and the stratigraphy in the core was generally uniform and well-preserved. We ob-served and documented over 1900 individual wind or iced crusts. We noted one visible tephra layer at a depth of 306.6 m in the core (~3560 years BP), which is likely tied to an eruption of Candlemas Island in the South Sandwich Islands.en_US
dc.description.provenanceSubmitted by Jered Lambiotte (jered.h.lambiotte@usace.army.mil) on 2019-07-10T19:39:19Z No. of bitstreams: 1 ERDC-CRREL TR-19-10.pdf: 3814940 bytes, checksum: 22ae15cc13c9e72cc9b15f77a34e288f (MD5)en
dc.description.provenanceMade available in DSpace on 2019-07-10T19:39:19Z (GMT). No. of bitstreams: 1 ERDC-CRREL TR-19-10.pdf: 3814940 bytes, checksum: 22ae15cc13c9e72cc9b15f77a34e288f (MD5) Previous issue date: 2019-07en
dc.description.sponsorshipNational Science Foundation (U.S.)en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................ vi Acronyms and Abbreviations .....................................................................................................................vii 1 Introduction ............................................................................................................................................ 1 1.1 Background ..................................................................................................................... 1 1.2 Objectives ........................................................................................................................ 3 1.3 Approach ......................................................................................................................... 3 2 Methods, Assumptions, and Errors ................................................................................................... 5 2.1 Methods .......................................................................................................................... 5 2.2 Errors ............................................................................................................................... 8 2.3 Assumptions.................................................................................................................. 10 3 Results and Data .................................................................................................................................12 4 Discussion ............................................................................................................................................ 19 4.1 Depth-age-scale uncertainty ........................................................................................ 19 4.2 Accumulation history .................................................................................................... 24 5 Conclusions .......................................................................................................................................... 27 References ................................................................................................................................................... 29 Report Documentation Page
dc.format.extent44 pages / 3.638 Mb
dc.format.mediumPDF/A
dc.language.isoen_USen_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-10
dc.rightsApproved for Public Release; Distribution is Unlimited
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat
dc.subjectAntarctic historyen_US
dc.subjectClimatic changesen_US
dc.subjectCyrospheric scienceen_US
dc.subjectGlaciologyen_US
dc.subjectIce core chronologyen_US
dc.subjectIce core datingen_US
dc.subjectIce coresen_US
dc.subjectIce--Antarcticaen_US
dc.subjectIce-sheet historyen_US
dc.subjectPolar scienceen_US
dc.subjectPolar volcanic recordsen_US
dc.subjectSnow accumulationen_US
dc.subjectSouth Pole historyen_US
dc.subjectSPICEcoreen_US
dc.titleVisual observations and stratigraphy of the South Pole Ice Core (SPICEcore) : a preliminary Holocene (~10.2 ka) accumulation record and depth-age chronologyen_US
dc.typeReporten_US


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