Estimation of Q p and Q s of Kinnaur Himalaya

Kumar, Naresh; Mate, Shonkholen; Mukhopadhyay, S.

doi:10.1007/s10950-013-9399-7

Cited by 48 publications

(27 citation statements)

References 56 publications

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“…The Rackchham (RACK) station is located close to the STD. Five stations of the Kinnaur network, namely, Spillo (SPLO), Mudh (MUDH), Kaza (KAZA), Losser (LOSR), and Hurling (HURL), were located over the TH [ Kumar et al , ; Hazarika et al , ]. Detailed station information is given in Table , and the RF data are available in the supporting information.…”

Section: Data and Seismological Profilementioning

confidence: 99%

Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

et al. 2017

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Crustal configuration beneath the Satluj valley region of the northwest Himalaya has been studied with the help of receiver function analysis of teleseismic earthquakes recorded by 18 broadband seismological stations. These stations were located on diverse geotectonic units from the Himalayan foreland basin in the south to the Tethyan Himalaya (TH) in the north. A gentle north dipping structure of the Main Himalayan Thrust (MHT) is imaged between the Sub and Higher Himalaya in contrast to the reported ramp structure of the MHT beneath the Garhwal and Nepal Himalaya. The ramp structure is, however, identified further north, beyond the South Tibetan Detachment in Satluj valley. The depth of the MHT varies from ~16 to 27 km across the Sub, Lesser, and Higher Himalaya, and it increases to ~38 km beneath the TH forming a ramp. This is significantly a different structure of the MHT beneath the Satluj valley, which is attributed to the effect of underthrusting Delhi‐Hardwar Ridge, a transverse structure to the Himalayan arc. Conspicuously, no strong or large earthquake is observed during 1964–2015 in this segment of the Himalayan Seismic Belt. The RF modeling, on the other hand, shows ~44 km crustal thickness beneath the Himalayan Frontal Thrust (HFT), and it gradually increases to ~62 km beneath the TH. Low shear wave velocity (~0.8–1.8 km s−1) is observed in the uppermost 3–4 km of the crust beneath the stations near the HFT, which may be the effect of the sedimentary column of the Indo‐Gangetic Plain.

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Section: Data and Seismological Profilementioning

confidence: 99%

Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

et al. 2017

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“…Yoshimoto et al (1993) estimated Q S /Q P >1 for Kanto region, Japan, whereas Mahood et al (2009) obtained ratios between 1.3 and 2.0 in East Central Iran. For Garhwal Himalaya, Tripathi et al (2014) calculated Q S /Q P =1.6-3.0; Singh et al (2012) estimated Q S /Q P = 3.9-4.8 for Kamaun Himalaya and, for Kinnaur Himalaya, Q S /Q P =1.5-1.8 (Kumar et al 2014). Chung and Sato (2001) obtained Q S /Q P =1.1-2.8 for more stable SE South Korea.…”

Section: Resultsmentioning

confidence: 98%

Attenuation of high-frequency body waves in the crust of the Central External Dinarides

Dasović

Herak

2015

J Seismol

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The Central External Dinarides are known as a tectonically complex region of moderate seismicity where several strong earthquakes occurred in the last century. In order to gain insight into the attenuation of seismic waves in the area, the extended coda normalization method was applied to band-pass-filtered seismograms of local earthquakes recorded at seven seismological broadband stations. Obtained results indicate strong attenuation of direct body waves: Q 0,P =Q P (1 Hz) is found between 21 and 120 and Q 0,S =Q S (1 Hz) is between 46 and 113, whereas the exponent n in the power law of frequency dependence of the quality factor is found in the range of 0.63-1.52 and 0.65-0.97 for n P and n S , respectively. P-waves are, on the average, attenuated more than S-waves. The three island stations (Dugi Otok (DUGI), Žirje (ZIRJ), Hvar (HVAR)) are distinguished by the strong low-frequency P-wave attenuation and more pronounced frequency dependence of the Q P factor (Q 0,S /Q 0,P >1.7, Q 0,P <60, n P >n S ). The remaining four inland stations (Udbina (UDBI), Morići (MORI), Kijevo (KIJV), Čačvina (CACV)) all exhibit similar qualitative attenuation properties for P-and S-waves (n P ≈n S ≈1 and Q 0,S ≈Q 0,P ), although individual values of the Q-factors vary notably within this group. Low-frequency attenuation of direct S-waves in the crust is stronger than mean attenuation of scattered coda waves in the lithosphere, especially for long coda lapse times. The results are also qualitatively in agreement with the thermal regime in the area.

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“…Solutions containing a mixture of the seven cardiovascular drug standards were stored at 40ЊC over 14 days. The presence of multiple drugs in a same medium could also give rise to the formation of interaction products [28,29], which are major interference risks.…”

Section: Chromatographic Separation Towards Degradation Productsmentioning

confidence: 99%

Liquid chromatography with tandem mass spectrometry for the simultaneous identification and quantification of cardiovascular drugs applied to the detection of substandard and falsified drugs

Bernard

Akrout

Buu

et al. 2015

J of Separation Science

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The counterfeiting of pharmaceuticals has been detected since about 1990 and has alarmingly continued to pick up steam. We have been recently involved in an evaluation program of some of the most commonly prescribed cardiovascular drugs in Africa, for analysing an important number of tablets or capsules obtained from different places in seven African countries. A reversed-phase high-performance liquid chromatography with tandem mass spectrometry method was developed and validated to simultaneously control the identity and the quantity of acenocoumarol, amlodipine, atenolol, captopril, furosemide, hydrochlorothiazide and simvastatin in tablets. Their separation was performed on a Kinetex® C(18) (100 mm × 2.1 mm inside diameter, 2.6 μm) column using a gradient elution of 20 mM ammonium formate buffer and acetonitrile (90:10 10:90 v/v) at a flow rate of 0.5 mL/min. The analytes were detected using electrospray ionisation tandem mass spectrometry in both positive and negative modes with multiple reaction monitoring. Tandem mass spectrometry fragmentation patterns of captopril, furosemide and acenocoumarol, up to now not detailed in the literature, were also studied to assist in the selection of the most relevant transitions towards the objectives. The developed method was validated as per International Conference on Harmonisation guidelines with respect to specificity, linearity, trueness, precision, limits of detection and quantification. It has been successfully applied to the control of oral forms of seven cardiovascular drugs collected in African countries.

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Estimation of Q p and Q s of Kinnaur Himalaya

Cited by 48 publications

References 56 publications

Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

Geometry of the Main Himalayan Thrust and Moho beneath Satluj valley, northwest Himalaya: Constraints from receiver function analysis

Attenuation of high-frequency body waves in the crust of the Central External Dinarides

Liquid chromatography with tandem mass spectrometry for the simultaneous identification and quantification of cardiovascular drugs applied to the detection of substandard and falsified drugs

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