International Journal of Earth Science and Geophysics最新文献

{"title":"Application of Aeromagnetic Data Analysis and Interpretations to Investigate Solid Mineral Potential in Part of Northwest Nigeria","authors":"Dzukogi Abubakar Nda'asabe, Sanusi Yusuf Abubakar, Mohammad Sabiu Bala, Roko Abubakar","doi":"10.35840/2631-5033/7557","DOIUrl":"https://doi.org/10.35840/2631-5033/7557","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122993466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Underlying Variations of Atmospheric CO2 Concentrations in Urban Environs of Owerri: Comparison with Rural Areas and Need for Urban Greening","authors":"Anoruo Cm, Chineke Tc","doi":"10.35840/2631-5033/7558","DOIUrl":"https://doi.org/10.35840/2631-5033/7558","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123667506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A New Insight into the Biostratigraphy of Usfan and Haddat Ash Sham Formations, West Central Saudi Arabia","authors":"Gameil M, Mesaaed Aa, Thiga R","doi":"10.35840/2631-5033/7556","DOIUrl":"https://doi.org/10.35840/2631-5033/7556","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116855827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Litho-Structural Analysis of the Sara-Fier Ring Complex, Northcentral Nigeria","authors":"IO Ajigo, O. Ayodele","doi":"10.35840/2631-5033/7555","DOIUrl":"https://doi.org/10.35840/2631-5033/7555","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125463183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sedimentation Rate Estimation and Tracing Organic Carbon and Nutrients Sources in Sediment of Ha Long Bay (Vietnam)","authors":"Thuan Dao Dinh, Long Nguyen Quang, Thang Duong Van, Nhan Dang Duc, Anh Ha Lan, Oanh Nguyen Thi","doi":"10.35840/2631-5033/1852","DOIUrl":"https://doi.org/10.35840/2631-5033/1852","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132372945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Poromechanical Modeling of Hydraulic Fracture Propagation","authors":"Li Wang, X. Guo, Bing Shi, Yunxing Cao","doi":"10.35840/2631-5033/1846","DOIUrl":"https://doi.org/10.35840/2631-5033/1846","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122043656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Euler Deconvolution and Two-Dimensional Modeling of Subsurface Structures over Part of Northern Bida Basin and its Surrounding Basement Rocks, Northwest, Nigeria Using Magnetic Method","authors":"Dzukogi Abubakar Nda'asabe, Sanusi Yusuf Abubakar, Muhammad Sabiu Bala, A. Salako","doi":"10.35840/2631-5033/1838","DOIUrl":"https://doi.org/10.35840/2631-5033/1838","url":null,"abstract":"Euler deconvolution and two-dimensional modeling over part of Northern Bida Basin and its surrounding basement rocks, using aeromagnetic data was carried out in this research study. The study area is bounded by latitude 9° 00′ 10° 30′ and longitude 5° 00′ 7° 00′ with total area of 36,300 km2. The magnetic data was processed using Oasis montaj to produce the total magnetic intensity (TMI) data The TMI data was reduced to equator (RTE). The polynomial filter was applied on the RTE grid to performed regional residual separation. The residual data obtained was subjected to euler depth evaluation and two-dimensional modeling. The depth to the subtle magnetic anomalies and basement rock evaluated from euler deconvolution ranged from 3.083 m to 12.6 m. The highest thickness of sedimentary rocks in the study area was observed around Fashe, Mokwa, Egbako and Bida at the west, southwest and southern part of the study area. The profiles labeled AA, BB, CC, and DD were carefully drawn to cut across major strike in the study area. The result obtained from standard euler deconvolution was used as depth constrain for modeling the residual magnetic field anomalies. The result obtained from modeling shows average depth to the basement/basement structure. The depth was found to be high reaching a depth of about 3.1 km around Fashe, Mokwa and Egbako in southwestern part of the study area. This depth and the prevailing fracture/fault in the area could influence the accumulation of hydrocarbon in the study area. The average depth to the subtle magnetic source target (magnetic minerals) around Wushishi/Zungeru, Maiwayo and Paiko were suggested to be 12.8 m.","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131285151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the Impact of Rainfall Variability on Teff Production and Farmers Perception at Gubalafto District, North Eastern, Ethiopia","authors":"Bahiru Wagaye, Wende Endalamaw, Mohammed Lubaba, M. Yimer, A. Hassen, D. Yilma","doi":"10.35840/2631-5033/1842","DOIUrl":"https://doi.org/10.35840/2631-5033/1842","url":null,"abstract":"Rainfall variability adversely impacts crop production and imposes a major constraint on farming planning, mostly under rain fed conditions across developing countries. Rainfall variability from season to season greatly affects soil water availability to crops, and thus poses crop production risks to agriculture which is a major economic activity in Gubalafto District, Ethiopia. It was observed that farmers tend to rely on their accumulated experience about weather conditions in the schedule of their farm operations. Therefore, this study was designed to examine the impact of rainfall variability on teff production and farmers perception in Gubalafto district, Ethiopia. The Primary data were obtained through questionnaire administration and field observations among the farmers in Gubalafto district. Stratified random sampling technique was employed in the selection of sample size and a total of 203 farmers were randomly selected for the study. The secondary data was obtained from National Meteorological Agency of Ethiopia (daily rainfall between 1984 and 2018) and Teff yield was collected from North Wollo Agricultural Office (2010-2018). Coefficient of variation, standardized anomaly index (SAI), precipitation concentration index (PCI) were used to evaluate rainfall and Teff yield variability. Sen’s slope estimator and Mann-Kendall’s test were used to determine the magnitude and trends of changes, respectively. The analysis revealed that rainfall in the district is highly variable both in space and time for the last years. The coefficient of variation showed that seasonal rainfall distribution is highly variable than annual time scale. The rainfall trends showed decreasing non-significantly in both belg and bega season while increasing non significantly in both annual and kiremt time scale over the study area. Significant correlations exist between amount of rainfall and Teff production. Hence small changes in amount and distribution of seasonal rainfall causes significant negative impacts on Teff production that varies from reduced yield to the total loss of the crop. The result of the regression analysis shows rainfall characteristics contributed 86% in explaining the variations in the yield of Teff per hectare in the study area. Both farmers’ perceptions and meteorological data show that rainfall is much more unreliable in the study area. Most farmers reported that Teff yield is a decreasing pattern over time due to shortage of rainfall, frequent irregularity of rainfall and other factors. Therefore, specific adaptation strategies are needed for the study area to cope with the risks, sustain farming and improve food security.","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127723434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Time-Lapse Gravity Monitoring of Groundwater of the Sinai Peninsula","authors":"Mohamed Ahmed","doi":"10.35840/2631-5033/1840","DOIUrl":"https://doi.org/10.35840/2631-5033/1840","url":null,"abstract":"","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127241695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Forearc Basin: Characteristics of the Subsurface in Magdalena Shelf, Baja California, Mexico, from the Interpretation of Seismic-Reflection Profiles","authors":"A Mastache-RománEdgar, González-Escobar Mario","doi":"10.35840/2631-5033/1841","DOIUrl":"https://doi.org/10.35840/2631-5033/1841","url":null,"abstract":"Eight seismic reflection profiles, two dimensions, were collected in a sector of the Magdalena Shelf, Baja California, Mexico, which contains a forearc basin, providing a spatial view of faults and seismic reflectors in this basin. Two small asymmetric basins were configured; ToscoAbreojos and San Lázaro controlled by the Tosco-Abreojos and Santa Margarita-San Lázaro Faults. These faults accommodate a great part of the transtensional stress in the shelf and control the bathymetry and show great deformation in the western sector. Seismic horizons illustrate that the depocenter of the San Lazaro basin reaches depths of ~4 km, while the ToscoAbreojos account reaches depths of around ~5.5 km, being present at these depths a diffuse reflector that is considered the acoustic basement. Santa Margarita fault is present in the Santa Margarita and Magdalena islands, extending northwest, then stop presenting its relief represented by the San Lazaro fault, which is associated with the seismic activity resent reported for the region. Reflectors observed to the south of the region, previously reported by other works, were also observed in this area. However, there are new reflectors to the NW, which fill the spaces of both basins, taking a total of eight seismostratigraphic units. Unconformity is present throughout the region that separates the Neogene sequence from the PaleoceneEocene sequence that fills the forearc basin. Below the unconformity, there is a huge packet of Miocene sediments. Structural height corresponding to the subduction complex that extends in the SE-NW direction along the Magdalena Shelf is present, which is considered as the acoustic basement and is attributed to the ophiolite rocks. This structural height can be related to the Alto Lagunitas, located in the central part of Baja California, where an ophiolite rock is also present. But Magdalena Shelf is more recent than the Alto Lagunitas since the said rocks in this place are younger arch. From the results obtained, Santa Margarita Fault should be considered for future risk studies, since it is tectonically active and its path passes near population centers, such as Puerto San Carlos.","PeriodicalId":347676,"journal":{"name":"International Journal of Earth Science and Geophysics","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126250577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}