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Ice core

An ice core is a core sample that is typically removed from an ice sheet or a high mountain glacier. Since the ice forms from the incremental buildup of annual layers of snow, lower layers are older than upper ones, and an ice core contains ice formed over a range of years. Cores are drilled with hand augers (for shallow holes) or powered drills; they…

History & Measurement

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Overview

Structure of ice sheets and cores

Coring

Core processing

Ice core data

History

Future plans

Advanced semantic analysis

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Map overview Semantic statistics

Ice core

Nodes214
Edges213
Triples169
Avg. degree1.99
Density0.009346
Components1

How this topic connects Entity context

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Ice core

Top relations

related to Glaciochemistry · 34
Ice core → AD, Analysis, Antarctic, Antarctica, Both, Ca, CH, Dragging, Greenland, HCHO, HNO, Iceland, If, In, Indonesia, Laki, Many, Material, Methanesulfonate, MSA
related to Large coring projects · 18
Ice core → Centre, Climate, Copenhagen, Denmark, Drilling, EastGRIP, Greenland, Hercules, Ice, In, National Science Foundation, NEEM, Niels Bohr Institute, Over, The, The EastGRIP, University, US Air National Guard
related to Non-polar cores · 15
Ice core → Alps, Andes, Asia, Canada, Cores, El Niño, Himalayas, Ice, Iceland, Indonesia, Mount Kilimanjaro, New Zealand, Scandinavia, Some, US
related to Structure of ice sheets and cores · 13
Ice core → An, Antarctic, Antarctica, As, At Summit Camp, Because, Dome, Firn, Greenland, Ice, The, These, Two
related to Radionuclides · 12
Ice core → Accelerator, Antarctica, Be, Chlorine-36, Galactic, Greenland, Kr, Pb, Pu, Si, The, Tritium
related to Other inclusions · 10
Ice core → Antarctica, At, For, It, Meltwater, Meteorites, Pollen, South Pole Station, The, These
related to Coring · 9
Ice core → An, Below, Dry, Early, Hand, Ice, The, They, With
related to Dating · 9
Ice core → An, Another, As, At, For, Many, The, To, Vostok
related to Future plans · 9
Ice core → Current, Drill, Ice Core Sciences, Identify, Improve, International Partnerships, IPICS, Retrieve, These
related to Palaeoatmospheric sampling · 9
Ice core → Because CH, CH, CO, Early, Further, It, Similarly, Since, This

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Important terminology

ice core cores drilling years snow used greenland layers drill also depth since hole drilled data antarctica surface 000 temperature

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Ice coreis acore sample that is typically removed from an ice sheet or a high mountain glacier0.90text
Ice coreis avertical column through a glacier0.90text
carbon dioxideinstance ofand the air trapped in tiny bubbles can be analysed to determine the level of atmospheric gases0.80text
beryllium-10 created by cosmic raysinstance ofisotopes0.80text
Antarcticainstance ofit often does not retain stratigraphic information.Cores are often drilled in areas0.80text
central Greenland where the temperature is almost never warm enough to cause meltinginstance ofit often does not retain stratigraphic information.Cores are often drilled in areas0.80text
but the summer sunlight can still alter the snowinstance ofit often does not retain stratigraphic information.Cores are often drilled in areas0.80text
periodicities in the earth's orbital parameters.A difficulty in ice core dating is that gases can diffuse through firninstance ofAnother method is to correlate radionuclides or trace atmospheric gases with other timescales0.80text
so the ice at a given depth may be substantially older than the gases trapped in itinstance ofAnother method is to correlate radionuclides or trace atmospheric gases with other timescales0.80text
CH 4instance ofmeasurements of gases0.80text
past mean ocean temperaturesinstance ofand determine other palaeoclimatic information0.80text
helium can rapidly diffuse through iceinstance ofSome gases0.80text

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