K. Tietze's scientific contributions
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Publications (4)
During the eruption of Nyiragongo Volcano in January 2002 about 10(6) m(3) of lava entered Lake Kivu. The high concentrations of CO2 and CH4 dissolved in the deep waters of Lake Kivu raised serious concerns about a potential gas outburst with catastrophic consequences for the population in the Kivu-Tanganyika region. Therefore, 3 weeks after the vo...
Citations
... As a consequence, ecological features have been investigated and collected in a book (Descy et al., 2012). Gas influx and arising ebullition danger through changing climate, weather conditions or volcanic activity have been considered (Schmid et al., 2002;Lorke et al., 2004). ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/279105221218308-1443555279228_Q64/Martin-Schmid-25.jpg)
![[object Object]](https://i1.rgstatic.net/ii/profile.image/272476626223121-1441974898181_Q64/Andreas-Lorke.jpg)
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... The CH 4 is most probably produced in the lake, mainly in the sediments, from decomposing organic material and by reduction of CO 2 . The reason for the unusually high concentrations is the very stable stratification which prevents the exchange of gases between the deep water and the surface waters and finally the loss to the atmosphere (Tietze, 1980 and Halbwachs et al., 2002). The catchment area of Lake Kivu is densely populated with an average density of about 400 inhabitants per km 2 (Muvundja et al., 2009). ...
... per decade (data provided by Woolway and Maberly). The modeled expectations align well with in situ data on water temperature in several lakes within the LVB ecoregion, including Lake Edward (WWF, 2006), Lake Kivu (Katsev et al., 2014;Larke et al., 2004), and Lake Victoria Sitoki et al., 2010). Ogutu-Ohwayo et al. (2020) presented mean annual air temperature and summer lake water temperature for several lakes of Africa between 1985 and 2010, based on a global database of summer surface water temperatures (Sharma et al., 2015). ...
... Groundwater inflow to the lake is known and has mainly been documented from the north, where active volcanoes dominate the geology (Schmid et al., 2002;Ross et al., 2015). The soil in this area originates from acid metamorphic and volcanic parent materials, and is characterized by the presence of narrow-to-wide fractures varying from shallow to deep, in addition to fissures acting as high-rate water infiltrating sites. ...
