![]() ![]() (2020) dated a block-and-ash flow deposited on the western flank of the volcano as 13.5 ± 1.5 ka using (U-Th)/He zircon methodology. A loose pumice sample collected from the lower southern flank of the Greater Hasandağ volcano was dated 28.9 ± 1.5 ka (Schmitt et al., 2014). Lava samples from the summit area of the volcano were dated 29 ± 1 ka and 33 ± 2 ka (K-Ar, Kuzucuoglu et al., 1998). Upper-Pleistocene and Holocene activity of the volcano was previously documented in several studies (Ercan et al., 1990 Notsu et al., 1995 Aydar and Gourgaud, 1998 Deniel et al., 1998 Kuzucuoglu et al., 1998 Pastre et al., 1998 Schmitt et al., 2014 Doğan-Kulahcı et al., 2018). The latest, neovolcano stage produced ignimbrite flows, dome emplacements with related block-and-ash flows, peripheral scoria cones and maar eruptions (Aydar and Gourgaud, 1998 Deniel et al., 1998). The Hasandağ system is built by three successive construction and collapse stages, namely ‘Paleo-, Meso- and Neo-Hasandağ stages’ (Aydar and Gourgaud, 1998 Deniel et al., 1998). Apart from other volcanoes/volcanic fields of CAVP, the fresh cone morphology of the Hasandağ system signifies its Holocene activity (Fig. Erciyes (3917 m a.s.l.), Greater Hasandağ (3255 m a.s.l.) and Lesser Hasandağ (3069 m a.s.l.) constitute the highest volcanic edifices of the CAVP. 1) and it is a double-peaked stratovolcano system rising inside the earlier collapse structures. Hasandağ volcano is located ~30 km SSE to Aksaray, the most populated city of the region (Fig. Obruk-Zengen-Eğrikuyu system (Aydar et al., 2021) could be considered as the southernmost boundary of the CAPV. ![]() The southern boundary of the system is drawn by older volcanic systems namely Melendiz and Keçibuyduran volcanoes and the younger representative system of the area, Hasandağ (Mount Hasan). Mount Erciyes is located on the northeast corner of the CAPV central area, largely known and referred to as Cappadocia is formed by several caldera systems such as Acıgöl, Çardak calderas, Göllüdağ complex, and several unexposed calderas forming the thick and widespread pyroclastic deposits. The Central Anatolian Volcanic Province (CAVP) is a volcanic terrain bounded by Ecemiş Fault to the east, Tuz Gölü Fault to the southwest, and Kızılırmak River to the north in the Central Anatolia, Turkey. A permanent ground-based thermal observation station should be established for direct and remote thermal monitoring of the fumarole zone. The resolution of the thermal imagery positively affects the mapping and monitoring capability. High-resolution ground-based and aerial thermal mosaic images were built to investigate the thermal radiation over the summit fumarole zone and its structural dependence.Ī baseline reference value for thermal monitoring of the fumarole zone was achieved using remotely sensed data and time-series decomposition of long-term TIR data. 56 nighttime ASTER TIR imagery acquired between 20 had been used to derive and analyze the Surface temperature, Surface temperature anomaly and Relative radiative heat flux. ![]() The trend component was used to analyze temporal thermal anomalies in comparison to the decomposed meteorological temperature data. We used a statistical approach using the Seasonal Decomposition of Time-series procedure to decompose the temperature data into the trend, seasonal, and remainder components. MODIS daily surface temperature data were analyzed for a period of 18 years. Multisource and wide-period thermal remote sensing analyses were performed to investigate the thermal state and to test the possibilities of remote thermal monitoring of the volcano. ![]() The highest temperature and CO 2 values measured in those vents were ~ 70 ☌ and > 100,000 ppm respectively. Weak fumaroles and water vapor emissions have been observed at several vents, on the western flank of the Greater Hasandağ summit, between 30 m (a.s.l.). Hasandağ is a double-peaked long-dormant volcano, where associated volcanic risk is poorly known and needs to be assessed. ![]()
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