Posted tagged ‘Istanbul’

Sedimentary deposits in the Istanbul’s Byzantine harbour

January 27, 2012

Bony et al. published an interesting study in Quaternary International about a Byzantine harbour (Theodosian harbour) which has been uncovered during excavations in Istanbul. The stratigraphic sequence goes back to 7000 BP. In the marine part of the sedimentary sequence, the authors interpreted high-energy deposit as tsunami deposits and related to the earthquake of 557 AD. You can find more info at http://dx.doi.org/10.1016/j.quaint.2011.03.031.

Source: nautarch.tamu.edu

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Water quality in the Kucukcekmece Lake, Istanbul

September 27, 2010

A recent paper published by Taner et al., in the Journal of Ecological Indicators have discussed about the the Lagoon Water Quality Index (L-WQI) of Kucukcekmece Lake, a highly polluted watershed located in western metropolitan Istanbul by focusing on primary problems of the system such as increasing stress on aquatic biota, eutrophication and organic pollution. They used environmental indicators like dissolved oxygen saturation, total nitrogen to total phosphorus ratio, nitrate, orthophosphate, chlorophyll-a, chemical oxygen demand, pH, turbidity and electrical conductivity. The results from Küçükçekmece Lagoon were correlated with the observed water quality trends and reflect the impact of pollution in its tributaries. For more details please refer to doi:10.1016/j.ecolind.2010.08.003

Earthquake damage scenarios for Istanbul

July 26, 2010

Ansal et al., from Bogazici University, published a research study about a methodology for seismic microzonation and earthquake damage scenarios.  A pilot study is carried out to evaluate seismic damage in a district in Istanbul, which showed the significance of site characterization and site response analysis. Their results can be found in the journal of Soil Dynamics and Earthquake Engineering. doi:10.1016/j.soildyn.2010.06.004

Photo by Enric Marti (AA)

Istanbul’s Water from Melen River, think again?

March 22, 2010

Istanbul is one of the highly populated cites of the world. And, it has been facing water scarcity since the past decade. Water transfer from nearby Melen Watershed was considered as the most feasible option to supply water to Istanbul due to its high water potential and relatively less degraded water quality. Erturk et al. (from Istanbul Technical University) published a water quality assessment report in the Journal of Environmental Management. Their study found that Melen River has relatively poor water quality, and it is considered unsuitable for drinking purposes. doi:10.1016/j.jenvman.2010.02.021

North Anatolian Fault

March 19, 2010

The North Anatolian Fault (NAF) has been accumulating stress near Istanbul for a long time. An article recently published in the EARTH Magazine explains how the NAF fault might break during a possible earthquake in the future. Follow the link to see the article. http://www.earthmagazine.org/earth/article/321-7da-3-8