Earth Sciences

Volume 8, Issue 1, February 2019

  • Well Water Level Analysis Based on Barometric Pressure Effects and Earth Tides

    Fenghe Ding, Heqing Ma, Guofu Luo, Xianwei Zeng

    Issue: Volume 8, Issue 1, February 2019
    Pages: 1-9
    Received: 1 November 2018
    Accepted: 20 November 2018
    Published: 24 January 2019
    Abstract: Barometric pressure coefficient and tidal factor are used to study the porosity, the solid skeleton volume compressibility coefficient and the water volume compressibility coefficient of the Dahuichang well, Banqiao well, Huanghua well, Dadianzi well, Fengzhen well and Sanhaodi well in the northern region of North China under undrained condition. T... Show More
  • Research on the Seismic Strain Field Before Earthquake Above Ms7, CHINESE Mainland

    Guofu Luo, Zhongwang Liu, Fenghe Ding, Heqing Ma, Mingzhi Yang

    Issue: Volume 8, Issue 1, February 2019
    Pages: 10-19
    Received: 12 December 2018
    Accepted: 27 December 2018
    Published: 30 January 2019
    Abstract: In the paper, seismic strain field is considered as a variable of seismic activity. The strain field is calculated before the earthquake above Ms7 in mainland China since 1980, and the abnormal change of time factor is extracted before the earthquake, by means of the natural orthogonal function expansion method. The results show that the time facto... Show More
  • Energy Recovering System for Moving Bulk Materials

    Michael Prenner

    Issue: Volume 8, Issue 1, February 2019
    Pages: 20-44
    Received: 23 October 2018
    Accepted: 11 January 2019
    Published: 21 February 2019
    Abstract: Bulk materials, which are transported on continuous conveyors, partly have a high energy content, depending on the specified mass flow and the conveying velocity. At discharge points to a storage area or at transfer points from one conveyor to another, the energy content often increases due to the elevation of the discharge conveyor. At these point... Show More
  • Geophagic Clayey Materials of Sabga Locality (North West Cameroon): Genesis and Medical Interest

    Elvis Duplex Kenne Kalguem, Armand Sylvain Ludovic Wouatong, Daniel Njopwouo, Christel Sobdjou Kemteu, Georges Ivo Ekosse

    Issue: Volume 8, Issue 1, February 2019
    Pages: 45-59
    Received: 10 January 2019
    Accepted: 14 February 2019
    Published: 6 March 2019
    Abstract: Geophagia, the deliberate ingestion of clayey materials, is a complex eating behaviour with obscure etiology and numerous health/medical problems. Geological, mineralogical and geochemical studies were carried out on Sabga geophagic clayey materials located within a trachyte Bamenda mountain, about 16 km east of Bamenda town (North West Cameroon), ... Show More
  • Review on Research of the Negative Air Ion Concentration Distribution and its Correlation with Meteorological Elements in Mountain Tourist Area

    Deng Ling

    Issue: Volume 8, Issue 1, February 2019
    Pages: 60-68
    Received: 6 September 2018
    Accepted: 5 November 2018
    Published: 15 March 2019
    Abstract: This paper focuses on the research progress of the negative air ion concentration distribution characteristics and its correlation with meteorological elements in mountain tourist areas for recent decades in China. Many researches showed that the distribution of negative air ion in mountain tourist areas has obvious daily and seasonal variations, a... Show More