Z. Huang et al., EVALUATION OF PALEOCLIMATIC PROXIES BY THE RESCALED RANGE METHOD - RESULTS FROM LABRADOR SEA, ODP SITE 646, Canadian journal of earth sciences, 30(7), 1993, pp. 1385-1389
Rescaled range analysis is tested as a method for comparison and evalu
ation of terrestrial and marine paleoclimatic data from the northwest
Atlantic Ocean. We calculated the Hurst exponents (H) of oxygen isotop
e, foraminifera, dinoflagellate, and pollen-spore records from Ocean D
rilling Project Site 646, and compared the Hurst values of these clima
tic proxies with the corresponding power spectra. Our study reveals di
fferences in Hurst values among several proxy-climatic records from on
e location. However. higher Hurst values do not contain more informati
on on climatic changes, in contrast to the conclusion of a previous st
udy that compared records from continental and oceanic sites. Therefor
e, caution is needed when using the Hurst exponent for evaluating the
information content of climatic proxies.