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Yun Tao - One of the best experts on this subject based on the ideXlab platform.

  • an Index for the Interface between the indian summer monsoon and the east asian summer monsoon
    Journal of Geophysical Research, 2012
    Co-Authors: Jie Cao, Yun Tao
    Abstract:

    [1] IIE, the Interface between the Indian Summer Monsoon (ISM) and the East Asian Summer Monsoon (EASM), is defined using the equivalent potential temperature and summer long-term mean reanalysis data provided by NOAA/OAR/ESRL PSD. The June–July–August reanalysis data for the period 1951–2008 and empirical orthogonal function analysis are further applied to obtain the IIE Index at the near-surface isobaric level. The Index has a prominent interannual variation that is strongly correlated with the seesaw variation between the ISM and EASM. When a strong EASM and weak ISM occur, this Interface Index is higher than the normal, with the Interface between the two summer monsoons shifting farther eastward than normal. When a weak EASM and strong ISM appear, the Index is lower than normal, with the Interface moving farther westward than normal. The western North Pacific subtropical high, a major factor in the EASM system, plays an important role in the year-to-year variation of the IIE. Compared with approaches taken in previous studies, this Index objectively and quantitatively describes the IIE variation and better represents the two teleconnection patterns associated with the Asian summer monsoon, thus enhancing interpretations of the interaction between the ISM and EASM and its effects on regional droughts and floods in East Asia.

Jie Cao - One of the best experts on this subject based on the ideXlab platform.

  • an Index for the Interface between the indian summer monsoon and the east asian summer monsoon
    Journal of Geophysical Research, 2012
    Co-Authors: Jie Cao, Yun Tao
    Abstract:

    [1] IIE, the Interface between the Indian Summer Monsoon (ISM) and the East Asian Summer Monsoon (EASM), is defined using the equivalent potential temperature and summer long-term mean reanalysis data provided by NOAA/OAR/ESRL PSD. The June–July–August reanalysis data for the period 1951–2008 and empirical orthogonal function analysis are further applied to obtain the IIE Index at the near-surface isobaric level. The Index has a prominent interannual variation that is strongly correlated with the seesaw variation between the ISM and EASM. When a strong EASM and weak ISM occur, this Interface Index is higher than the normal, with the Interface between the two summer monsoons shifting farther eastward than normal. When a weak EASM and strong ISM appear, the Index is lower than normal, with the Interface moving farther westward than normal. The western North Pacific subtropical high, a major factor in the EASM system, plays an important role in the year-to-year variation of the IIE. Compared with approaches taken in previous studies, this Index objectively and quantitatively describes the IIE variation and better represents the two teleconnection patterns associated with the Asian summer monsoon, thus enhancing interpretations of the interaction between the ISM and EASM and its effects on regional droughts and floods in East Asia.

D N Bose - One of the best experts on this subject based on the ideXlab platform.

  • schottky barrier studies on single crystal znte and determination of Interface Index
    Journal of Applied Physics, 2000
    Co-Authors: S Bhunia, D N Bose
    Abstract:

    Detailed studies on metal-(111) p-ZnTe Schottky barriers have been carried out using In, Ag, Al, and Cu as barrier metals. Weak dependence of barrier height on metal work function was observed. The highest and lowest barrier heights of 0.99 and 0.80 eV were found for In and Cu respectively which had lowest and highest work functions. The ideality factor n was found to vary between 1.84 for In and 2.13 for Al contacts. The Fermi level was found to be pinned effectively by Interface states, the density of which was calculated to be 4.7×1013 states/cm2/eV. From the current–voltage characteristics measured between 250 and 350 K, the effective Richardson constant A** was determined to be 72±6 A/cm2/K2. This agrees very well with the theoretically calculated value of A** for a hole effective mass mh*=0.6m0. The temperature variation of barrier height was also determined from the capacitance–voltage characteristics. The Interface Index a parameter used to describe the pinning strength of semiconductors was found...

S Bhunia - One of the best experts on this subject based on the ideXlab platform.

  • schottky barrier studies on single crystal znte and determination of Interface Index
    Journal of Applied Physics, 2000
    Co-Authors: S Bhunia, D N Bose
    Abstract:

    Detailed studies on metal-(111) p-ZnTe Schottky barriers have been carried out using In, Ag, Al, and Cu as barrier metals. Weak dependence of barrier height on metal work function was observed. The highest and lowest barrier heights of 0.99 and 0.80 eV were found for In and Cu respectively which had lowest and highest work functions. The ideality factor n was found to vary between 1.84 for In and 2.13 for Al contacts. The Fermi level was found to be pinned effectively by Interface states, the density of which was calculated to be 4.7×1013 states/cm2/eV. From the current–voltage characteristics measured between 250 and 350 K, the effective Richardson constant A** was determined to be 72±6 A/cm2/K2. This agrees very well with the theoretically calculated value of A** for a hole effective mass mh*=0.6m0. The temperature variation of barrier height was also determined from the capacitance–voltage characteristics. The Interface Index a parameter used to describe the pinning strength of semiconductors was found...

Larry J Ruff - One of the best experts on this subject based on the ideXlab platform.

  • radiated seismic energy and earthquake source duration variations from teleseismic source time functions for shallow subduction zone thrust earthquakes
    Journal of Geophysical Research, 2004
    Co-Authors: Susan L Bilek, Thorne Lay, Larry J Ruff
    Abstract:

    [1] Earthquake source time functions deconvolved from teleseismic broadband P wave recordings are used to examine rupture variations for 417 underthrusting earthquakes located on the interplate Interface in circum-Pacific subduction zones. Moment-scaled duration of significant moment release varies with depth, with longer-duration events occurring in the shallowest 20 km of the megathrusts. The source time functions are also used to estimate radiated seismic energy. Two estimates are obtained: a simple scaled triangle substitution for the moment release history provides a minimum estimate, while integration of the time function shape provides an estimate limited only by the bandwidth of the teleseismic deconvolutions. While these energy calculations underestimate total energy, they enable systematic comparisons of rupture process within and between subduction zones. We do not find significant depth dependence for radiated energy overall, but some regions do show mild trends of increasing energy/seismic moment ratios (E/Mo) with increasing source depth that correspond to rupture duration variations in those regions. The observations of longer rupture duration at shallow depth with moderate E/Mo may be due to heterogeneous friction and structural features on the shallow plate Interface. Index TERMS: 7215 Seismology: Earthquake parameters; 7230 Seismology: Seismicity and seismotectonics; 8164 Tectonophysics: Stresses—crust and lithosphere; KEYWORDS: radiated energy, shallow subduction, source parameters