Ftan is a former municipality in the district of Inn in the Swiss canton of Graubünden. On 1 January 2015 the former municipalities of Ardez , Guarda , Tarasp , Ftan and Sent merged into the municipality of Scuol .

FTAN (frequency-time analysis)是一种由两个台站之间互相关函数求出群、相速度频散的方法。 群到时 \tau (\omega_ {0}) 是高斯滤波器的中心频率（由 包络函数 的峰值确定中心频率）的函数，使得群速度 U (\omega_ {0})=r/\tau (\omega_ {0}) ，其中r为站间距。 定义 瞬时频率 为Analitic signal在时间τ时的相位变化的速率，使用瞬时频率代替中心频率。 \phi_ {a}=2\pi N,N=0,\pm1,\pm2..... 对于噪声互相关来说 \phi_ {a}=2\pi N-\pi/4,N=0,\pm1,\pm2.....

The AFTAN is a modification of previously developed and widely used FTAN (e.g., [3],[4],[5]. The AFTAN converts time series of cross-correlation functions into frequency-time diagramms of signal power as a function of frequency and group time …

Average elevation: 5,768 ft • Ftan, Scuol, Region Engiadina Bassa/Val Müstair, Grisons, 7551, Switzerland • Visualization and sharing of free topographic maps.

🌍 Satellite Ftan map (Grisons, Switzerland): share any place, ruler for distance measuring, find your location, routes building, address search. All streets and buildings location of Ftan on the live satellite photo map. Europe online Ftan map

2 天之前 · FTAN maps from a synthetic example using SpecFEM2D. a) and c) represent FTAN maps for the shots shown in b) and d). The synthetic Earth structure is shown in Fig. 7; shots shown were selected for both on and off and geometrical structure between 120 and 170 m chainage. e) and g) show the digitised dispersion curve (identified below periods of 0 ...

2015年1月1日 · Ftan is a former municipality in the district of Inn in the Swiss canton of Graubünden. Ftan has about 506 residents and an elevation of 1,638 metres.

The FTAN map for the considered seismogram is generated by pushing the “Map” button. The FTAN map is shown, together with the Fourier amplitude spectrum of the signal, plotted to the right of the seismogram plot. In addition, a default structural model is also presented, for which the theoretical group velocity

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Figure 1 shows an example on a synthetics SAC signal. Once imported the single vertical seismic records (left above in Fig. 1) the common FTAN map matrix (U(w)/Period) is generated.