Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

This paper describes the contents of the 2016 edition of the HITRAN molecular spectroscopic compilation. The new edition replaces the previous HITRAN edition of 2012 and its updates during the intervening years. The HITRAN molecular absorption compilation is composed of five major components: the traditional line-by-line spectroscopic parameters required for high-resolution radiative-transfer codes, infrared absorption cross-sections for molecules not yet amenable to representation in a line-by-line form, collision-induced absorption data, aerosol indices of refraction, and general tables such as partition sums that apply globally to the data. The new HITRAN is greatly extended in terms of accuracy, spectral coverage, additional absorption phenomena, added line-shape formalisms, and validity. Moreover, molecules, isotopologues, and perturbing gases have been added that address the issues of atmospheres beyond the Earth. Of considerable note, experimental IR cross-sections for almost 300 additional molecules important in different areas of atmospheric science have been added to the database. The compilation can be accessed through www.hitran.org. Most of the HITRAN data have now been cast into an underlying relational database structure that offers many advantages over the long-standing sequential text-based structure. The new structure empowers the user in many ways. It enables the incorporation of an extended set of fundamental parameters per transition, sophisticated line-shape formalisms, easy user-defined output formats, and very convenient searching, filtering, and plotting of data. A powerful application programming interface making use of structured query language (SQL) features for higher-level applications of HITRAN is also provided.

/pdf/the-hitran-2008-molecular-spectroscopic-database-1ud8clpej3.pdf

The HITRAN 2008 molecular spectroscopic database

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Table Of Integrals Series And Products

Tables of integrals

Climate Change 1995 is a scientific assessment that was generated by more than 1 000 contributors from over 50 nations. It was jointly co-ordinated through two international agencies; the World Meteorological Organization and the United Nations Environment Programme. The assessment was completed by the Intergovernmental Panel on Climate Change (IPCC) with a primary aim of reviewing the current state of knowledge concerning the impacts of climate change on physical and ecological systems, human health, and socioeconomic factors. The second aim was to review the available information on the technical and economic feasibility of the potential mitigation and adaptation strategies.

Climate Change 1995

http://iopscience.iop.org/article/10.1088/1361-6455/aa7550/pdf

Positron scattering from simple molecules

Total cross section for chloroflouromethanes and CClx radicals by electron impact

The present work focuses on electron impact scattering in crystalline ice, which is an exotic solid. The major difference between crystalline form and amorphous form lies in its structure. Here we consider the H2O molecule to possess properties consistent with the ice structure. Our basic calculation rests on the complex optical potential for the e-molecule system, with the molecular charge density as an input. To examine a single scattering event in condensed phases, we build up a model scattering potential to determine total inelastic cross-section Qinel. Finally an estimate of the total ionization cross-section, Qion for H2O (free), H2O (amorphous) and H2O (ice) in the energy range from threshold to 2000 eV, is obtained through semi-empirical arguments.

Electron impact ionization of H2O molecule in crystalline ice

The present work concentrates on the investigation of various inelastic channels such as positronium (Ps) formation, direct ionization, and total ionization by the positron impact for simple molecules in an extensive energy range (∼Ps formation threshold to 5 keV). The modified form of the well-known spherical complex optical potential formalism and the complex scattering potential-ionization contribution method are used for the calculations. Although only limited literature was available for the molecules studied in the present endeavor, in general, reasonable agreement is found with the existing data. A phenomenological technique developed recently is used in the present work to calculate the Ps formation cross section efficiently.

Study of inelastic channels by positron impact on simple molecules

In 1979 Robert and Bonamy published a complex formalism (CRB) for the calculations of the pressure broadened half-width and collision-induced line shifts [J. Phys. Paris 40, 923 (1979)]. Application of the linked cluster theorem produced expressions that no longer needed the cut-off procedure that plagued earlier line shape theories. Recently, Ma, Tipping and Boulet (MTB) suggested that the application of the linked cluster theorem in their derivation of Robert and Bonamy was based on an invalid assumption. In their work MTB gave the modified expressions and state that the effect of the modification is more important for strong interaction systems. Here the effect of the MTB modification on the formalism of Robert and Bonamy is studied for systems which range in interaction strength from strong to weak. In particular, complex Robert–Bonamy calculations and calculations based on the modified formalism are made in the mean-relative thermal velocity approximation for the systems H2O–H2O, H2O–N2, H2O–O2, O3–N...

/pdf/modified-complex-robert-bonamy-formalism-calculations-for-193flx4pql.pdf

Bobby Antony

Papers

Positron scattering from simple molecules

Total cross section for chloroflouromethanes and CClx radicals by electron impact

Electron impact ionization of H2O molecule in crystalline ice

Study of inelastic channels by positron impact on simple molecules

Modified complex Robert–Bonamy formalism calculations for strong to weak interacting systems