Ground temperature histories for central and eastern Canada from geothermal measurements: Little Ice Age signature | Zendy

Beltrami Hugo | Zendy; Mareschal JeanClaude | Zendy

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Ground temperature histories for central and eastern Canada from geothermal measurements: Little Ice Age signature

Author(s) -

Beltrami Hugo,

Mareschal JeanClaude

Publication year - 1992

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/92gl00671

Subject(s) - borehole , geology , ice core , geothermal gradient , climatology , period (music) , little ice age , atmospheric temperature , physical geography , climate change , geography , oceanography , geophysics , paleontology , physics , acoustics

Deep borehole temperature profiles have been analyzed to determine ground temperature histories in central and eastern Canada. Clear signs of a cold period between 1500 and 1800 A.D., corresponding to the little ice age, have been found. A warming trend after 1800 A.D. was detected throughout eastern and central Canada. Temperature profiles from western Ontario are consistent and were inverted simultaneously to yield a regional ground temperature history. The recent warming appears to be correlated with the increase of atmospheric CO 2 reported for a Greenland ice core.

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