An introspective glance into damage assessment: challenges and lessons learned from the Paso Robles (San Simeon) earthquake     

David McEntire  Jill Souza  Matthew Lloyd Collins  Ekong J. Peters  Abdul-Akeem Sadiq 《Natural Hazards》2012,61(3):1389-1409

This paper underscores the importance of damage assessment and recognizes the direct effect it has on post-disaster response and recovery operations. The paper first explores the literature on this subject, including the history, types, methods, and problems relating to damage assessment. After discussing the employed research methodology, the paper uses the Paso Robles (San Simeon, California) earthquake as a case study to illustrate the challenges and successes with regard to damage assessment. Logistics, politics, information management, coordination, preparedness, and other topics are discussed in this section. The paper concludes with lessons and opportunities for research and its application.  相似文献   

C₂₄–C₂₇ Degraded triterpanes in Nigerian petroleum: novel molecular markers of source/input or organic maturation?     

C.M. Ekweozor  J.I. Okogun  D.E.U. Ekong  J.R. Maxwell 《Journal of Geochemical Exploration》1981,15(1-3)

The analyses, by gas chromatography and gas chromatography/mass spectrometry, of the triterpane concentrate of crude oils sampled from various oil fields of the Tertiary Niger delta have revealed the ubiquitous presence of a series of C₂₄–C₂₇ tetracyclic alkanes likely to be novel degraded triterpanes. The presence in the crude oils of a C₂₅ tricyclic alkane, apparently structurally related to the tetracyclanes, seemed consistent with the hypothesis of sequential cleavages of the terminal rings of precursor pentacyclic triterpenoid derivatives with increasing thermal transformation of the respective petroleums.The degraded triterpanes might be useful for assessing the stages of thermal evolution of petroleum in the reservoir. A possible application, to oil exploration, of the expected variations in the concentration of the polycyclanes in crude oils with different thermal histories would be in distinguishing primary (immature) oils from mature but biodegraded oils.  相似文献   

Empirical Relations Between Aquifer Geohydraulic–Geoelectric Properties Derived from Surficial Resistivity Measurements in Parts of Akwa Ibom State,Southern Nigeria     

Ekanem  Aniekan M.  George  Nyakno J.  Thomas  Jewel E.  Nathaniel  Ekong U. 《Natural Resources Research》2020,29(4):2635-2646

Natural Resources Research - Aquifer geohydraulic properties such as hydraulic conductivity and transmissivity are very vital parameters in groundwater resource management and exploitation. In this...  相似文献   

Variation in existing domestic service level of pipe-borne water supply and associated challenges in a tourism destination of Uyo Capital City,Nigeria     

Eja  Eja Iwara  Essien  Nsikak  Itu  Prince-Charles O.  Ekong  Maurice O. 《GeoJournal》2022,87(1):277-294

GeoJournal - Domestic water supply plays a very significant role in the day to day life of humans in the global society and without water, life cannot be continued and that while water provisions...  相似文献