Sentences with phrase «poor ventilation during»

Negative delta C - 13 (as) values in glacial AABW were likely caused by poor ventilation during formation, probably associated with extensive sea ice coverage.

Not exact matches

The three lines are: (1) the beginning: the Khirthar transgression and the onset of neritic carbonate accumulation in the Bartonian Age (preceding onset of the Middle Eocene climatic optimum [MECO]-RRB-; (2) the midlife change (Bartonian - Priabonian transition): the shift from carbonate - rich to carbonate - poor, higher - nutrient environments under estuarine circulation, causing widespread dysaerobia culminating in opaline silicas; and (3) the Eocene - Oligocene = Priabonian - Rupelian boundary and glaciation during oxygen isotope event Oi - 1, with return of improved ventilation in neritic environments and resumption of carbonate accumulation.

This is a common hazard during summer months, but it can even occur in winter if indoor work environments have poor ventilation and air circulation.