Age model of sediment core V20-120 (Table 2)
Time series analyses of atmospheric and oceanic variables in a late Pleistocene record from the northwest Pacific show the complex relationship of the response of various segments of the climate system to changes in the earth's orbit. Most variance spectra of time series from this subarctic rec...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.52257 2024-09-15T18:37:59+00:00 Age model of sediment core V20-120 (Table 2) Morley, Joseph J Pisias, Nicklas G Leinen, Margaret W LATITUDE: 47.400000 * LONGITUDE: 167.750000 * DATE/TIME START: 1964-06-11T00:00:00 * DATE/TIME END: 1964-06-11T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 16.07 m 1987 text/tab-separated-values, 16 data points https://doi.pangaea.de/10.1594/PANGAEA.52257 https://doi.org/10.1594/PANGAEA.52257 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.52257 https://doi.org/10.1594/PANGAEA.52257 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Morley, Joseph J; Pisias, Nicklas G; Leinen, Margaret W (1987): Late Pleistocene time series of atmospheric and oceanic variables recorded in sediments from the subarctic Pacific. Paleoceanography, 2(1), 49-62, https://doi.org/10.1029/PA002i001p00049 Age model composite DEPTH sediment/rock Lamont-Doherty Earth Observatory Columbia University LDEO PC Piston corer V20 V20-120 Vema dataset 1987 ftpangaea https://doi.org/10.1594/PANGAEA.5225710.1029/PA002i001p00049 2024-07-24T02:31:21Z Time series analyses of atmospheric and oceanic variables in a late Pleistocene record from the northwest Pacific show the complex relationship of the response of various segments of the climate system to changes in the earth's orbit. Most variance spectra of time series from this subarctic record contain frequency peaks with periods corresponding to at least one of the major orbital components of eccentricity, obliquity, or precession. Although the radiolarian faunal (water mass) assemblages have prominent spectral peaks with 41,000-year periods which are coherent with obliquity at this frequency, only the Transitional faunal assemblage contains variance focused at a frequency corresponding to the 100,000-year period of eccentricity. Three of these faunal time series also show variance concentrated at a frequency with a 20,000-year period. These three time series are not coherent at a 20,000-year frequency with either of the dominant spectral peaks of precession. They are coherent, however, with variations in the second harmonic of the obliquity cycle. Changes in obliquity apparently affect siliceous faunal abundances in the northwest Pacific region of this high-latitude site more than variations in eccentricity or precession. Maxima in the time series of quartz abundance occur during low values of eccentricity and high glacial ice volume. Because atmospheric winds serve as the major source of supply of quartz to the sediments at this site, these high quartz values reflect increased aridity at the source region. Except for short periods during interglacials, the characteristics of the surface waters in this region of the subarctic Pacific during much of the last 460,000 years were similar to those which exist today in the Sea of Okhotsk. The spectrum of winter sea surface temperature estimates, derived from siliceous microfaunal abundances, contains dominant frequency peaks at periods of 100,000, 41,000, and 23,000 years which are coherent with eccentricity, obliquity, and precession, respectively. Based upon ... Dataset Subarctic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(167.750000,167.750000,47.400000,47.400000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Age model composite DEPTH sediment/rock Lamont-Doherty Earth Observatory Columbia University LDEO PC Piston corer V20 V20-120 Vema |
spellingShingle |
Age model composite DEPTH sediment/rock Lamont-Doherty Earth Observatory Columbia University LDEO PC Piston corer V20 V20-120 Vema Morley, Joseph J Pisias, Nicklas G Leinen, Margaret W Age model of sediment core V20-120 (Table 2) |
topic_facet |
Age model composite DEPTH sediment/rock Lamont-Doherty Earth Observatory Columbia University LDEO PC Piston corer V20 V20-120 Vema |
description |
Time series analyses of atmospheric and oceanic variables in a late Pleistocene record from the northwest Pacific show the complex relationship of the response of various segments of the climate system to changes in the earth's orbit. Most variance spectra of time series from this subarctic record contain frequency peaks with periods corresponding to at least one of the major orbital components of eccentricity, obliquity, or precession. Although the radiolarian faunal (water mass) assemblages have prominent spectral peaks with 41,000-year periods which are coherent with obliquity at this frequency, only the Transitional faunal assemblage contains variance focused at a frequency corresponding to the 100,000-year period of eccentricity. Three of these faunal time series also show variance concentrated at a frequency with a 20,000-year period. These three time series are not coherent at a 20,000-year frequency with either of the dominant spectral peaks of precession. They are coherent, however, with variations in the second harmonic of the obliquity cycle. Changes in obliquity apparently affect siliceous faunal abundances in the northwest Pacific region of this high-latitude site more than variations in eccentricity or precession. Maxima in the time series of quartz abundance occur during low values of eccentricity and high glacial ice volume. Because atmospheric winds serve as the major source of supply of quartz to the sediments at this site, these high quartz values reflect increased aridity at the source region. Except for short periods during interglacials, the characteristics of the surface waters in this region of the subarctic Pacific during much of the last 460,000 years were similar to those which exist today in the Sea of Okhotsk. The spectrum of winter sea surface temperature estimates, derived from siliceous microfaunal abundances, contains dominant frequency peaks at periods of 100,000, 41,000, and 23,000 years which are coherent with eccentricity, obliquity, and precession, respectively. Based upon ... |
format |
Dataset |
author |
Morley, Joseph J Pisias, Nicklas G Leinen, Margaret W |
author_facet |
Morley, Joseph J Pisias, Nicklas G Leinen, Margaret W |
author_sort |
Morley, Joseph J |
title |
Age model of sediment core V20-120 (Table 2) |
title_short |
Age model of sediment core V20-120 (Table 2) |
title_full |
Age model of sediment core V20-120 (Table 2) |
title_fullStr |
Age model of sediment core V20-120 (Table 2) |
title_full_unstemmed |
Age model of sediment core V20-120 (Table 2) |
title_sort |
age model of sediment core v20-120 (table 2) |
publisher |
PANGAEA |
publishDate |
1987 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.52257 https://doi.org/10.1594/PANGAEA.52257 |
op_coverage |
LATITUDE: 47.400000 * LONGITUDE: 167.750000 * DATE/TIME START: 1964-06-11T00:00:00 * DATE/TIME END: 1964-06-11T00:00:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 16.07 m |
long_lat |
ENVELOPE(167.750000,167.750000,47.400000,47.400000) |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Supplement to: Morley, Joseph J; Pisias, Nicklas G; Leinen, Margaret W (1987): Late Pleistocene time series of atmospheric and oceanic variables recorded in sediments from the subarctic Pacific. Paleoceanography, 2(1), 49-62, https://doi.org/10.1029/PA002i001p00049 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.52257 https://doi.org/10.1594/PANGAEA.52257 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.5225710.1029/PA002i001p00049 |
_version_ |
1810482327315283968 |