Archive for the ‘Hydrology’ category

Bronze age vegetation in the Middle East

August 22, 2010

by George Perfors

Deckers and Pessin have published a paper in the Quaternary Research about the Bronze age vegetation changes in the Middle Euphrates and Upper Jazirah (Syria and Turkey) based on more than 51,000 charcoal fragments of more than 380 samples from nine Bronze Age sites. Human impacts first took place within the riverine forests, and followed by land clearing within the woodland steppe. Local wood supplies at that time were still available despite the increased deforestation. For details, doi:10.1016/j.yqres.2010.07.007


Coastlines of Turkey

July 6, 2010

A new book chapter about the geomorphological features of Turkish coastlines appeared in the Encyclopedia of the World’s Coastal Landforms by Springer. It is the re-edited version of previously published chapter from The World’s Coasts: Online (2003) written by the famous geomorphologist Prof. Oguz Erol. It is a nice reference chapter to keep in mind. doi:10.1007/978-1-4020-8639-7_10.1

Lake shrinkings from Southwest Turkey

July 1, 2010

Source: Hurriyet news

Coastline changes of Aksehir and Eber Lakes (SW, Turkey) have been investigated by Sener et al. from Suleyman Demirel University, Isparta, using multi-temporal satellite images since 1975. According to their results, published in the Journal of Water Resources Management, the surface area and volume of these two lakes have been decreased significantly. The Aksehir Lake was even dried up completely during the summer of 2008. doi:10.1007/s11269-009-9467-5

High-level arsenic values from Simav aquifers, Western Turkey

July 1, 2010

A paper, published in the Journal of Water, Air & Soil Pollution by Gunduz et al from Dokuz Eylul University, Izmir, presents findings about the high-level arsenic values from two aquifers (~natural water storages under the ground) of Simav Plain, Kutahya. Water sampling from 27 wells yielded an average arsenic concentration of 99.1 µg/L with a maximum of 561.5 µg/L (exceeding several orders of magnitude of the national and international standards which is about 10 µg/L).  Natural sources and anthropogenic influences of arsenic (by mining activities) were found to be the source of high concentrations. doi:10.1007/s11270-009-0055-3

Drought in the Fertile Crescent

June 14, 2010

Trigo et al. have published a study in the Journal of Agricultural and Forest Meteorology about the recent drought period (driest since 1940) in the Fertile Crescent (today’s south-eastern Turkey, eastern Syria, northern Iraq and western Iran). Precipitation decline was mostly noticeable over Iraq (up to 70%), with the suppression of rainfall particularly acute during 2007–2008. They characterized the drought in temporal and spatial scales and performed the first assessment on the associated impact in the hydrology, vegetation dynamics and cereal productions. They claimed a great impact on cereal production (wheat and barley) in the region and showed that the major grain-growing countries in the area (Syria, Iraq and Iran) were significantly affected by this drought, particularly in the year 2008. doi:10.1016/j.agrformet.2010.05.006

Image created by Jesse Allen, using data provided by the United State Department of Agriculture Foreign Agriculture Service and processed by Jennifer Small and Assaf Anyamba, NASA GIMMS Group at Goddard Space Flight Center.

Precipitation during the Miocene in Turkey

June 8, 2010

Akkiraz et al., from Kutahya Dumlupinar University, have analyzed palynofloras covering the time span from the Early Miocene (~20 million years ago) to the Late Miocene (~7 million years ago) in the western and central Turkey. Their results were published in the latest issue of the Journal of Paleogeography, Paleoclimatoogy, Paleoecology. The presented tables, and maps showing the temporal palaeoprecipitation values can be found in doi:10.1016/j.palaeo.2010.05.002

Sea level changes and vertical land movement in the Eastern Mediterranean

June 8, 2010

A new paper, published in the Quaternary International, provides new relative sea level data inferred from 13 archaeological sites along the coastal regions of Turkey and Israel. Anzidei et al. uses these archeological site positions with respect to the present sea level to measure of sea level changes for the last two millennial. For detail information please refer to doi:10.1016/j.quaint.2010.05.005