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Record #189755:
Spectral analysis of physical properties of the Prydz Bay sediments, Antarctica for identifying cycles for the last five million years / Henna Valppu, Kari Strand, Antti Huusko.
Title: | Spectral analysis of physical properties of the Prydz Bay sediments, Antarctica for identifying cycles for the last five million years / Henna Valppu, Kari Strand, Antti Huusko. |
Author(s): | Valppu, Henna. Strand, Kari. Huusko, Antti. |
Date: | 2009. |
In: | Geophysica. (2009.), Vol. 45(1-2) (2009) |
Abstract: | Presents results of spectral analysis of physical properties, including magnetic susceptibility and gamma-ray attenuation porosity/density evaluation (GRAPE) measurements, during last five million years of deposition at ODP site 1165, 400 km north-west of Prydz Bay in Australian sector of Southern Ocean. Studied interval of sediment core was sampled every 10 cm and discrete samples were measured for magnetic susceptibility to obtain more prominent dataset with less noise. Results show record of glacier ice dynamics and cyclic behaviour due to external (i.e. orbital) forcing. Pronounced expression of Middle Pliocene warm period from 3.15 to 2.85 Ma ago is seen in discrete samples by elevated magnetic susceptibility values by factor of two compared with earlier record. |
Notes: | Geophysica. Vol. 45(1-2) :215-223 (2009). |
Keywords: | 551.58 -- Climatology. 551.583.7 -- Palaeoclimatology. 551.782.2 -- Pliocene. 525.3 -- Earth, orbit and motions. 551.35 -- Marine sediments. 551.352/.353 -- Marine sediments, deep sea. 551.332.25 -- Glacio-marine deposits. 551.338 -- Ice ages, theories of causation. D -- Atmospheric sciences. (*7) -- Antarctic regions. (*74) -- Australian Antarctic Territory. (*744) -- Princess Elizabeth Land. (*80) -- Southern Ocean. (*86) -- Southern Ocean, Australian sector. |
SPRI record no.: | 189755 |
LDR 02161naa#a2200000#a#4500 001 SPRI-189755 005 20240329090055.0 007 ta 008 240329s2009####xx#ab#|##|###|0||#0|eng#d 035 ## ‡aSPRI-189755 040 ## ‡aUkCU-P‡beng‡eaacr 100 1# ‡aValppu, Henna. 245 10 ‡aSpectral analysis of physical properties of the Prydz Bay sediments, Antarctica for identifying cycles for the last five million years /‡cHenna Valppu, Kari Strand, Antti Huusko. 260 ## ‡a[S.l.] :‡b[s.n.],‡c2009. 300 ## ‡ap. 215-223 :‡bill., diags., table, map. 500 ## ‡aGeophysica. Vol. 45(1-2) :215-223 (2009). 520 3# ‡aPresents results of spectral analysis of physical properties, including magnetic susceptibility and gamma-ray attenuation porosity/density evaluation (GRAPE) measurements, during last five million years of deposition at ODP site 1165, 400 km north-west of Prydz Bay in Australian sector of Southern Ocean. Studied interval of sediment core was sampled every 10 cm and discrete samples were measured for magnetic susceptibility to obtain more prominent dataset with less noise. Results show record of glacier ice dynamics and cyclic behaviour due to external (i.e. orbital) forcing. Pronounced expression of Middle Pliocene warm period from 3.15 to 2.85 Ma ago is seen in discrete samples by elevated magnetic susceptibility values by factor of two compared with earlier record. 650 07 ‡a551.58 -- Climatology.‡2udc 650 07 ‡a551.583.7 -- Palaeoclimatology.‡2udc 650 07 ‡a551.782.2 -- Pliocene.‡2udc 650 07 ‡a525.3 -- Earth, orbit and motions.‡2udc 650 07 ‡a551.35 -- Marine sediments.‡2udc 650 07 ‡a551.352/.353 -- Marine sediments, deep sea.‡2udc 650 07 ‡a551.332.25 -- Glacio-marine deposits.‡2udc 650 07 ‡a551.338 -- Ice ages, theories of causation.‡2udc 650 07 ‡aD -- Atmospheric sciences.‡2local 651 #7 ‡a(*7) -- Antarctic regions.‡2udc 651 #7 ‡a(*74) -- Australian Antarctic Territory.‡2udc 651 #7 ‡a(*744) -- Princess Elizabeth Land.‡2udc 651 #7 ‡a(*80) -- Southern Ocean.‡2udc 651 #7 ‡a(*86) -- Southern Ocean, Australian sector.‡2udc 700 1# ‡aStrand, Kari. 700 1# ‡aHuusko, Antti. 773 0# ‡7nnas ‡tGeophysica. ‡gVol. 45(1-2) (2009) ‡wSPRI-90230 916 ## ‡aHS 917 ## ‡aUnenhanced record from Muscat, imported 2019 948 3# ‡a20240329 ‡bHS