메뉴 건너뛰기




Volumn 288, Issue 5468, 2000, Pages 1039-1042

El Nino-like climate teleconnections in New England during the late Pleistocene

Author keywords

[No Author keywords available]

Indexed keywords

EL NINO-SOUTHERN OSCILLATION; GEOCHRONOLOGY; PALEOCLIMATE; PLEISTOCENE; TELECONNECTION; VARVE;

EID: 0034640484     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.288.5468.1039     Document Type: Article
Times cited : (86)

References (47)
  • 9
    • 0032512734 scopus 로고    scopus 로고
    • M. K. Gagan et al., Science 279, 1014 (1998).
    • (1998) Science , vol.279 , pp. 1014
    • Gagan, M.K.1
  • 13
    • 0033593585 scopus 로고    scopus 로고
    • D. T. Rodbell et al., Science 283, 516 (1999).
    • (1999) Science , vol.283 , pp. 516
    • Rodbell, D.T.1
  • 17
    • 0000891265 scopus 로고
    • A. V. Jopling and C. McDonald, Eds. Society of Economic Paleontologists and Mineralogists, Tulsa, OK
    • G. M. Ashley, in Glaciofluvial and Glaciolacustrine Sedimentation, A. V. Jopling and C. McDonald, Eds. (Society of Economic Paleontologists and Mineralogists, Tulsa, OK, 1975), pp. 304-320.
    • (1975) Glaciofluvial and Glaciolacustrine Sedimentation , pp. 304-320
    • Ashley, G.M.1
  • 23
    • 0343937916 scopus 로고    scopus 로고
    • thesis, University of Massachusetts, Amherst
    • T. M. Rittenour, thesis, University of Massachusetts, Amherst (1999).
    • (1999)
    • Rittenour, T.M.1
  • 24
    • 0343937914 scopus 로고    scopus 로고
    • note
    • The Claremont gap in the NE varve chronology separated varves from the lower (NE varves 2701 through 6352) and upper (NE varves 6601 through 7750) Connecticut River valley (Glacial Lake Hitchcock). Ridge et al. (22) linked the two sequences (lower NE varve 6012 = upper NE varve 6601) to correct this gap. The Hudson Valley gap (NE varves 5600 through 5709) consisted of varves from Lake Albany that were used to span an interval not covered in Glacial Lake Hitchcock. Correlation with a core from Glacial Lake Hitchcock (23) has indicated a 10-varve error in the sequence (NE varves 5669 through 5678), which has been removed from the NE varve chronology (varve numbers were not adjusted, numbers 5669 through 5678 were just removed from the chronology).
  • 30
    • 0343937912 scopus 로고    scopus 로고
    • note
    • Correlation between these data sets was highly statistically significant [correlation coefficients ranged from r = 0.9 to 0.4 for 100 or more overlapping samples]. In one overlapping segment with only eight points in common, a statistically meaningful correlation was not obtained.
  • 33
    • 0343937911 scopus 로고    scopus 로고
    • note
    • We used the multitaper method of spectral analysis (31, 32) based on p = 8 tapers and a time-frequency half-bandwidth product of W = 5N as a compromise between spectral bandwidth and the stability of the spectrum estimate. The 4022 independent annual values were zero-padded to the nearest power of 2 (N = 4096), providing 2048/5 = 410 approximately independent estimates of the amplitude of the spectrum.
  • 35
    • 0343066143 scopus 로고    scopus 로고
    • note
    • Significance of narrowband features in the spectrum relative to the null hypothesis of red noise was determined with the robust method of noise background estimation of Mann and Lees (34). This analysis incorporates a separate application of Thomson's (37) F-test criterion for phase coherence to determine if the underlying signal is simply a narrowband feature of the spectrum or if it is a true harmonic oscillatory signal.
  • 41
    • 0342631872 scopus 로고    scopus 로고
    • note
    • Given the time-frequency bandwidth of the analysis (31), one would expect 1% of 410, or ∼4, spurious peaks at the 99% level, arising from random statistical fluctuations alone, including only 2 in the frequency range of 0.2 to 0.4 cycles per year.
  • 47
    • 0343066142 scopus 로고    scopus 로고
    • note
    • The authors thank J. Ridge, Tufts University, for providing varve thickness measurements from the NE varve chronology and his own measured sections, along with providing useful information regarding the dating of the varve chronology. T.M.R. acknowledges support from the Geological Society of America, Sigma Xi, and the Department of Geosciences at the University of Massachusetts. J.B.-G. acknowledges support from National Geographic and a University of Massachusetts faculty grant. M.E.M. acknowledges support from NOAA and NSF through the Earth Systems History Program and from the U.S. Department of Energy through the Alexander Hollaender Distinguished Postdoctoral Fellowship Program.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.