Longitude of Nkata Bay, Lake Nyasa

Ventilation of Lake Malawi / Nyasa

A tracer study was conducted on Lake Malawi/Nyasa, one of the deepest and largest lakes in the world, in order to quantify the renewal rates of the deep water. For this purpose, concentrations of the anthropogenic trace gas chlorofluorocarbon-12 (CFC-12) were measured in water samples which were collected in glass ampoules and analyzed by a new gas chromatographic separation method. Based on me...

Nutrient Cycling in Lake Malawi/Nyasa

Age of Lake Malawi (nyasa) and Water Level Fluctuations

Lake Malawi (Nyasa) is one of the few deep-water long-lived lakes that presently exist on earth. It lies in an uncompensated tectonic graben, controlled by differential vertical movements between the rift basin who subsides and the rift shoulders who are uplifted. Active tectonics is the major factor controlling the development and persistence ofthose deep lakes. For Lake Malawi (Nyasa), climat...

An outline of the physical limnology of Lake Malawi (Lake Nyasa)

Lake Nyasa) Lake Malawi, in tropical central Africa, is 560 by 75 km and consists of a single basin, maximum depth 695 m. Below 250 m the lake is homothermal at about 22.5”C and is anoxic. Above this level there is a seasonal cycle with the development of a marked thermocline. By May the upper 60 m is homothermal at about 27°C. During the dry, windy cool season the epilimnion cools but only in ...

Sedimentation in an artificial lake -Lake Matahina, Bay of Plenty

Lake Matahina, an 8 km long hydroelectric storage reservoir, is a small (2.5 km), 50 m deep, warm monomictic, gorge-type lake whose internal circulation is controlled by the inflowing Rangitaiki River which drains a greywacke and acid volcanic catchment. Three major proximal to distal subenvironments are defined for the lake on the basis of surficial sediment character and dominant depositional...