scholarly journals Determination of the 30-year creep trend on the Ismetpaşa segment of the North Anatolian Fault using an old geodetic network

2006 ◽  
Vol 58 (8) ◽  
pp. 937-942 ◽  
Author(s):  
H. S. Kutoglu ◽  
H. Akcin
Keyword(s):  
Geodetic Network ◽  
North Anatolian Fault ◽  
The North

scholarly journals DETERMINATION OF ASEISMIC DEFORMATION ON NORTH ANATOLIAN FAULT IN ISMETPASA AND DESTEK REGIONS USING GPS DATA, TURKEY

2017 ◽  
Vol 50 (1) ◽  
pp. 182
Author(s):  
H. Yavasoglu ◽  
M.N. Alkan ◽  
K. Aladogan ◽  
I.M Ozulu ◽  
V. Ilci ◽  
...  
Keyword(s):  
Eastern Mediterranean ◽  
Eastern Mediterranean Region ◽  
North Anatolian Fault ◽  
Gps Data ◽  
Slip Mechanism ◽  
The North ◽  
First Results ◽  
Fault Deformation ◽  
Fault Mechanism

The North Anatolian Fault Zone (NAFZ) is one of the most destructive fault in the eastern Mediterranean region. After Izmit and Düzce earthquakes, the projects on monitoring the fault motion increase using instrumental tools like GPS, InSAR, LIDAR, creepmeter, etc. The eastern and central part of the NAFZ from Karlıova to Vezirköprü has almost strike slip mechanism. The western part of the central NAFZ from Vezirköprü to Bolu has transpressive character. The aseismic fault deformation (creep) is also important phenomena for these two sections. The InSAR and LIDAR studies showed that the Ismetpasa and Destek regions have creep motions. For this purpose, the new project has been started to proof this phenomena with GPS data and to determine quantitatively the rate of convergence and its variation along segment of the NAF between Bolu and Çorum. The main aim of this study is determination of creep rate with geodetic measurements and combination of the data obtained from seismology, geodesy and geophysics to understand fault mechanism. Therefore, in this paper we discuss tectonic phenomena on the central part of the NAFZ and present the first results of the project.

scholarly journals New findings on the effects of the İzmit <i>M</i><sub>w</sub>=7.4 and Düzce <i>M</i><sub>w</sub>=7.2 earthquakes

2011 ◽  
Vol 11 (2) ◽  
pp. 267-272 ◽  
Author(s):  
H. S. Kutoglu ◽  
R. N. Celik ◽  
M. T. Ozludemir ◽  
C. Güney
Keyword(s):  
Black Hole ◽  
Geodetic Network ◽  
North Anatolian Fault ◽  
Fault Line ◽  
Surface Rupture ◽  
The North ◽  
Gps Network ◽  
New Findings ◽  
Surface Ruptures

Abstract. The 17 August 1999 İzmit Mw=7.4 and the 12 November 1999 Düzce Mw=7.2 earthquakes caused a 150 km long surface rupture in the western part of the North Anatolian Fault. The coseismic slips along the fault line and the trace of the surface ruptures were studied in detail in Barka (1999), Reilinger et al. (2000), Cakir et al. (2003a, b) and Ergintav (2009) after the earthquakes. However, the basin to the east of Sapanca Lake was a black hole for all investigations because there was no geodetic network and no significant deformation that could be obtained by using InSAR techniques. In this study, findings on the abovementioned basin have been reinterpreted through a GPS network newly explored. This interpretation shows coseismic slips of between 2–3 m, and links the surface rupture to the main branch of the North Anatolian Fault (NAF) in the east Sapanca basin.

scholarly journals Relaxation on the Ismetpasa segment of the North Anatolian Fault after the Golcuk <i>M</i><sub>w</sub> = 7.4 and Duzce <i>M</i><sub>w</sub> = 7.2 shocks

2010 ◽  
Vol 10 (12) ◽  
pp. 2653-2657 ◽  
Author(s):  
H. S. Kutoglu ◽  
H. Akcin ◽  
O. Gundogdu ◽  
K. S. Gormus ◽  
E. Koksal
Keyword(s):  
Creep Rate ◽  
Creep Behaviour ◽  
Geodetic Network ◽  
Fault Slip ◽  
North Anatolian Fault ◽  
The North ◽  
Observation Methods ◽  
The 1950S

Abstract. The Ismetpasa segment of the North Anatolian Fault (NAF) is a rare place where aseismic fault slip (creep) has been observed. Its creep behaviour has been monitored using different observation methods since the 1950s. The findings obtained from the studies until 1990s showed that the creep rate exponentially decreased before the major shocks in 1999, Golcuk (Mw = 7.4) and Duzce (Mw = 7.2). After these shocks, three GPS periods observation in 2002, 2007 and 2008 were carried out on the geodetic network established around the segment. The evaluations of these observations showed that the creep behaviour relaxed after the major earthquakes. This result demonstrates that the creep behaviour of the Ismetpasa segment might be a warning before future major earthquakes.

scholarly journals Triggered creep rate on the Ismetpasa segment of the North Anatolian Fault

2008 ◽  
Vol 8 (6) ◽  
pp. 1369-1373 ◽  
Author(s):  
H. S. Kutoglu ◽  
H. Akcin ◽  
H. Kemaldere ◽  
K. S. Gormus
Keyword(s):  
Creep Rate ◽  
Geodetic Network ◽  
North Anatolian Fault ◽  
Earthquake Risk ◽  
Major Earthquake ◽  
The North ◽  
The World

Abstract. The Ismetpasa segment of the North Anatolian Fault is one of the rare places in the world where aseismic creep event has been observed. This segment was ruptured during both the 1944, Mw=7.2, Gerede and 1951, Mw=6.9, Kursunlu earthquakes. After these earthquakes, the segment has not experienced a major earthquake anymore. Starting from 1957, many studies using different technologies have been carried out to determine the creep rate of the segment. All these studies until 2002 revealed that the creep movement of the segment slowed down. The new observation campaign of the Ismetpasa geodetic network shows that the Ismetpasa segment has ceased the slowing trend and started to gain speed. This might be interpreted as an increasing earthquake risk for this segment.

The New Swedish Cyprus Expedition 2010. Excavations at Dromolaxia Vizatzia/Hala Sultan Tekke. Preliminary results

2011 ◽  
Vol 4 ◽  
pp. 69-98 ◽  
Author(s):  
Peter M. Fischer ◽  
Patrik Klingborg ◽  
Fanny Kärfve ◽  
Fredrika Kärfve ◽  
C. Hagberg ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Main Task ◽  
Phase 2 ◽  
The North ◽  
12Th Century ◽  
Area 6 ◽  
Recent Phase ◽  
The Rich ◽  
Ground Penetrating

Determination of the complete occupational sequence of the site, including investigation of pre-12th century levels which were thoroughly studied by P. Åström since the 1970s, is the main task of the planned project. During the course of the expedition (NSCE11) in spring 2010 a ground-penetrating radar survey (GPR) was carried out at Dromolaxia Vizatzia/Hala Sultan Tekke in Area 6, leading to the discovery of a large Late Cypriote complex. The compound is bordered to the north by a substantial wall, against which nine rooms (so far) could be exposed. Two occupational phases have been verified but there are indications of a third. The suggested functions of the various structures of the most recent phase are: living, working, storage and administration spaces. The rich find contexts point to the production of textiles and metal objects, and the locally produced pottery is generally of a high quality. There are also many imports, mainly from the Mycenaean sphere of culture. The locally produced vessels from Phase 2 include the “Creature krater” which is a masterpiece of a high artistic standard. Another piece of elevated artistry is the piece of a “Warrior vase”.

Biochemical study of attached macroalgae from the Madeira Archipelago and beach-cast macroalgae from the Canary Islands: multivariate analysis to determine bioresource potential

2020 ◽  
Vol 63 (3) ◽  
pp. 283-298
Author(s):  
Nuno Nunes ◽  
Sofia Valente ◽  
Sónia Ferraz ◽  
Maria Carmo Barreto ◽  
Miguel A.A. Pinheiro de Carvalho
Keyword(s):  
Biochemical Study ◽  
Algal Species ◽  
Biochemical Properties ◽  
Total Phenolic ◽  
Total Carotenoids ◽  
The North ◽  
Madeira Archipelago ◽  
Total Carbohydrates ◽  
Beach Cast

AbstractFifteen attached macroalgae from the Madeira Archipelago, comprising three green, three red and nine brown algal species, as well as two beach-cast macroalgal samples, collected along the north shore of Gran Canaria, were assessed for their biochemical properties. The analysis included the determination of total minerals, total carbohydrates, protein, lipids, chlorophyll a, total carotenoids, total phenolic content, fucoxanthin and phycobilins (allophycocyanin, phycocyanin and phycoerythrin). The results showed a high variability of biochemical composition, allowing for the targetting of specific bioresources for particular purposes, including functional foods. This work provides the foundation for a biorefinery strategy implementation plan, for which specific macroalgae may be targeted for valuable and beneficial compounds.

Sign in / Sign up

Export Citation Format

Share Document