Archive for March 2010

Wind energy potential of Turkey

March 29, 2010

A recent article in press appeared in the Renewable and Sustainable Energy Reviews discusses the wind energy potential of Turkey.  Although, most of the electric energy sources of Turkey obtained from thermal (mainly natural gas) and hydraulic, there is a great potential for renewable energies such as wind energy. The author, Kamil Kaygusuz from Karadeniz Technical University, reported that the estimated wind power capacity of Turkey is about 83,000 MW while only 10,000 MW of it seems to be economically feasible to use. However, as in 2009, the total installed wind power capacity of Turkey was only 4.3% of its total economical wind power potential (433 MW). If you want learn more about Turkey’s installed electric power capacity, electric energy production, and also Turkey’s current wind energy status, please refer to doi:10.1016/j.rser.2010.03.022

Heat wave changes in Turkey

March 25, 2010

A new data set of daily maximum and minimum summer air temperatures from 246 meteorological station in Turkey and from surrounding region (Eastern Mediterranean) revealed an increase trend in summer heat waves since 1960s (Kuglitsch et al., 2010). (A heat wave is defined as a period of three or more consecutive hot days and nights not interrupted by more than one non‐hot day or night). According to this new data, published in GRL, the heat wave intensity, heat wave length and heat wave number increased by a factor of 7.6 ± 1.3, 7.5 ± 1.3 and 6.2 ± 1.1, respectively. Over the whole area, summer time temperatures increased by ~0.34°C per decade, since 1960. The most pronounced increase were along the eastern parts of Turkish Black Sea coastline, in western, southwestern, and central Turkey, and across the Western Balkans. The impact of heat waves may include increase of heat related deaths, morbidity, effects on  infrastructures, and consequent impacts on society, agriculture, industry, ecosystem, services and tourism. doi:10.1029/2009GL041841

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

Evidence of Holocene ashes from Central Anatolia in the deep-sea sediments of the Eastern Mediterranean

March 19, 2010

A new paper published by Hamann et al. about the first evidence of Holocene ash layers from the central Anatolia in the deep-sea sediment from the Eastern Mediterranean. The paper will appear in the Journal of Quaternary Research, with co-authers from Hacettepe University, Dr. Orkun Ersoy and Dr. Erkan Aydar. Radiometric, stratigraphic and sedimentological data shows that the tephra was deposited between 8970 and 8690 cal yr BP. They compared the tephra with proximal to medial-distal tephra deposits from well-known Mediterranean ash layers and ash fall deposits from the Central Anatolian volcanic field using electron probe microanalyses on volcanic glass shards and morphological analyses on ash particles. They found a correlation with the Early Holocene ‘Dikkartın’ dome eruption of the Erciyes Volcano, more than 600 km to the north. doi:10.1016/j.yqres.2009.12.004

Glaciers on Uludag

March 19, 2010

Uludag (2542 m above sea level, which means almighty mountain in Turkish) is a very well known mountain in Turkey and one of the most popular ski destination, just about 100 km south of Istanbul, very close to the city of Bursa. It is indeed one of the mountains that has experienced glaciations during the Late Pleistocene. Zahno et al. recently published a paper in Quaternary Science Reviews about the chronology of its past glaciations. They have used 10Be and 26Al cosmogenic isotopes to date the glacier related landforms in the mountain. Their absolute age results indicate that the local glacial maximum occurred about 20.3 thousands years ago, which is in well agreement with other ages obtained from other mountains of Turkey. This is the time frame in which there were very large glaciers existed on most of the northern Europe and on many high mountains in the region. Zahno et al., have also found later phases of glacier expansions on Uludag at around 16.1 to 11.5 thousands years ago. Today, there is no glaciers exist in the mountain. doi:10.1016/j.quascirev.2010.01.012

Hello world!, and Merhaba Turkiye

March 19, 2010

Merhaba,

Welcome to my new blog which I will share the recent geological news that I have found interesting about Turkey. For now, the language of the blog will be in English. But, I will post news in Turkish as well. I hope you will find this website interesting, and if you want to share your comments, please send an email to me.

Mehmet Akif SARIKAYA, PhD

http://web.itu.edu.tr/~masarikaya