Environmental correlates of pack ice noise
نویسنده
چکیده
ULow-frequency ambient noise under pack ice of the central Arctic Ocean has long-term variations mmj (periods greater than I h) which correlate highly with composit -measures of stress applied to the mice by wind, current, and drift. These composites are the horizontal ice stress and the stress moment, and are derived from meteorological and oceanographic data observed simultaneously with the noise. Atmospheric cooling, a known high correlate of midfrequency noise under the ice, is not important at low frequencies. ,
منابع مشابه
Environmental correlates of Arctic ice-edge noise
Temporal variations of low-frequency, broadband ambient noise measured in early summer under drifting ice floes of the marginal ice zone (MIZ) are cross correlated with local environmental forces and ice field descriptors. Surface gravity wave forcing is the primary correlate of the noise; its interaction with ice floes generates ound, most likely via flexural floe failure, and unloading motion...
متن کاملبررسی تاثیر کاربرد پماد املا و کیسه یخ بر درد ناشی از ورود سوزن های عروقی در بیماران همودیالیزی
Introduction: patients undergoing hemodialysis experience fistula puncture pain an average of 10 times per month. Reduction of these complications is important for adjusting the patients with long-term hemodialysis. This study aimed at investigating the effects of EMLA cream and ice pack on severity of pain induced by vascular needle punctures in hemodialysis patients. Methods: This was a quas...
متن کاملResponses of Antarctic pack-ice seals to environmental change and increasingkrill fishing
The compound effects of changing habitats, ecosystem interactions, and fishing practices have implications for the management of Antarctic krill and conservation of its predators. For Antarctic pack-ice seals, an important group of krill predators, we estimate the density and krill consumption in theWest Antarctic Peninsula (WAP)–WesternWeddell Sea area, the main fishery region; and we consider...
متن کاملDiversity and structure of bacterial communities in Arctic versus Antarctic pack ice.
A comprehensive assessment of bacterial diversity and community composition in arctic and antarctic pack ice was conducted through cultivation and cultivation-independent molecular techniques. We sequenced 16S rRNA genes from 115 and 87 pure cultures of bacteria isolated from arctic and antarctic pack ice, respectively. Most of the 33 arctic phylotypes were >97% identical to previously describe...
متن کاملThe Statistical Properties of Sea Ice Velocity Fields
By arguing that the surface pressure field over the Arctic Ocean can be treated as an isotropic, stationary, homogeneous, Gaussian random field, Thorndike estimated a number of covariance functions from two years of data (1979 and 1980).Given the active interest in changes of general circulation quantities and indices in the polar regions during the recent few decades, the spatial correlations ...
متن کامل