The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . easternberings00hood Year: 1981 108 Physical oceanography unit, water levels at both St. Lawrence and Cape Lisburne fall together and are nearly in phase with the transport (cf. Fig. 7-16). This mechanism also accounts for the nearly in- phase behavior of transport and (Pn-Pp). Since it is the removal of water from the whole northern shelf area (largely located south of St. Lawrence Island) that is responsible for major south transport, the strong east-west pr
The Eastern Bering Sea Shelf The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder . easternberings00hood Year: 1981 108 Physical oceanography unit, water levels at both St. Lawrence and Cape Lisburne fall together and are nearly in phase with the transport (cf. Fig. 7-16). This mechanism also accounts for the nearly in- phase behavior of transport and (Pn-Pp). Since it is the removal of water from the whole northern shelf area (largely located south of St. Lawrence Island) that is responsible for major south transport, the strong east-west pressure difference associated with the proper atmospheric condition does not have to lead the transport if the weather system develops from the south. Water removal from the northern shelf can begin before the pressure gradient indicating a strong north wind is registered at Nome and Provi- deniya Bukhta, located north of St. Lawrence and closer to Bering Strait. Northward transport stands in contrast to the southerly transport events. Periods of northerly flow tend to be more persistent and not so great in magni- tude, nor do they show the marked episodic character of the southerly flows (Fig. 7-16). The greater persistence of northerly flow must reflect the basic driving force, a higher sea level in the Bering Sea than in the Arctic Ocean (Coachman et al. 1975), which still remains unexplained. There were, however, a number of relatively rapid northward accelerations of transport during the seven months of record, which appear to have two basic causes: (1) After strong south transport events, rapid accelerations commonly occur which can be thought of as compensatory accelerations. When atmospheric conditions causing the southerly transport event dis- sipate, water is not being removed from the northern shelf, but there is still large southerly transport in the system. Water 'piles up' in the region around St. Lawrence Island and Norton Sound, a condition reflected by a strong
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