Pub Date : 2019-01-07DOI: 10.26480/MJG.01.2019.21.31
P. Kumar, V. Joshi
{"title":"A GEOSPATIAL- STATISTICAL APPROACH TO ALIENATE PRIORITY AREA OF UPPER WATERSHED OF RIVER SUBARNAREKHA USING MORPHOMETRIC ASSESSMENT FRAMEWORK","authors":"P. Kumar, V. Joshi","doi":"10.26480/MJG.01.2019.21.31","DOIUrl":"https://doi.org/10.26480/MJG.01.2019.21.31","url":null,"abstract":"","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"54 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85737224","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}
Pub Date : 2019-01-07DOI: 10.26480/mjg.01.2019.51.60
C. Okpoli
High resolution aeromagnetic dataset of Abakiliki (sheet 303 SW) was used for the characterization of the subsurface lithostructural features in part of the Lower Benue Trough, Nigeria. This study was necessitated for mapping and delineating hydrocarbon prospecting zones, in order to boost the Nation’s economy. The aeromagnetic data were subjected to several forms of filtering, reductions, and enhancement techniques for both qualitative and quantitative interpretations. The result of the reduction to equatortotal magnetic intensity (RTE-TMI) revealed the magnetic intensity of subsurface rocks ranging from 34.14nT to 61.40nT. These range of magnetic intensity values characterized the rocks in the area as shale and Limestone within the Asu River Group, Awgu shale, Eze-AKu shale and Nkporo shale. The upward continued RTE-TMI data to 500m, 1 km, 2 km, 3 km, 7 km and 10 km revealed regional trends of these rocks and structure thin –out with measure depth continuation. The second vertical derivative (SVD), Tilt-angle derivative (TDR) and Analytical signal (AS) revealed three (3) major faults; F1-F11, F2F12 and F3-F13 in NE-SW, ENE-WSW and NW-SE directions respectively. The depth to top of magnetic source were revealed by the radially averaged power spectrum (RAPS) and Euler deconvolution as 27m and 2.64km for shallower and deeper sources respectively. This study has demonstrated the efficiency of aeromagnetic methods, with their improved techniques as tools for regional mapping of lithologies and structures that may host important minerals and/or aid hydrocarbon accumulation and their probable depths.
{"title":"DELINEATION OF HIGH-RESOLUTION AEROMAGNETIC SURVEY OF LOWER BENUE TROUGH FOR LINEAMENTS AND MINERALIZATION: CASE STUDY OF ABAKIKILI SHEET 303","authors":"C. Okpoli","doi":"10.26480/mjg.01.2019.51.60","DOIUrl":"https://doi.org/10.26480/mjg.01.2019.51.60","url":null,"abstract":"High resolution aeromagnetic dataset of Abakiliki (sheet 303 SW) was used for the characterization of the subsurface lithostructural features in part of the Lower Benue Trough, Nigeria. This study was necessitated for mapping and delineating hydrocarbon prospecting zones, in order to boost the Nation’s economy. The aeromagnetic data were subjected to several forms of filtering, reductions, and enhancement techniques for both qualitative and quantitative interpretations. The result of the reduction to equatortotal magnetic intensity (RTE-TMI) revealed the magnetic intensity of subsurface rocks ranging from 34.14nT to 61.40nT. These range of magnetic intensity values characterized the rocks in the area as shale and Limestone within the Asu River Group, Awgu shale, Eze-AKu shale and Nkporo shale. The upward continued RTE-TMI data to 500m, 1 km, 2 km, 3 km, 7 km and 10 km revealed regional trends of these rocks and structure thin –out with measure depth continuation. The second vertical derivative (SVD), Tilt-angle derivative (TDR) and Analytical signal (AS) revealed three (3) major faults; F1-F11, F2F12 and F3-F13 in NE-SW, ENE-WSW and NW-SE directions respectively. The depth to top of magnetic source were revealed by the radially averaged power spectrum (RAPS) and Euler deconvolution as 27m and 2.64km for shallower and deeper sources respectively. This study has demonstrated the efficiency of aeromagnetic methods, with their improved techniques as tools for regional mapping of lithologies and structures that may host important minerals and/or aid hydrocarbon accumulation and their probable depths.","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87054603","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}
Pub Date : 2019-01-01DOI: 10.26480/mjg.01.2019.61.65
Dora B. Umoetok, Etim D. Uko, Aminayanasa P. Ngeri
{"title":"ATTENUATION OF WATER-BOTTOM MULTIPLES: A CASE STUDY FROM SHAL LOW MARINE IN THE NIGER DELTA, NIGERIA","authors":"Dora B. Umoetok, Etim D. Uko, Aminayanasa P. Ngeri","doi":"10.26480/mjg.01.2019.61.65","DOIUrl":"https://doi.org/10.26480/mjg.01.2019.61.65","url":null,"abstract":"","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"128 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79555109","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}
Pub Date : 2018-08-01DOI: 10.26480/MJG.02.2018.26.32
Rohana Tair, Sheyron Eduin
The Liwagu River is one of the most reliable river systems in Ranau which had experienced a mudflows event due to massive landslide of Mount Kinabalu. The aim of this study is to determine the water quality and compare the level of heavy metals in water and sediment of the Liwagu River and a non-impacted mudflows of Mansahaban River. Water and sediment were collected from four sampling stations on each river. Water samples were filtered with 0.45 μm membrane filter and acidified to pH110 mg/kg and >0.02 mg/L, respectively. The correlations coefficient shows that there were significant relationship between heavy metals in water and sediment from Liwagu and Mansahaban River (0.413
{"title":"HEAVY METALS IN WATER AND SEDIMENT FROM LIWAGU RIVER AND MANSAHABAN RIVER AT RANAU SABAH","authors":"Rohana Tair, Sheyron Eduin","doi":"10.26480/MJG.02.2018.26.32","DOIUrl":"https://doi.org/10.26480/MJG.02.2018.26.32","url":null,"abstract":"The Liwagu River is one of the most reliable river systems in Ranau which had experienced a mudflows event due to massive landslide of Mount Kinabalu. The aim of this study is to determine the water quality and compare the level of heavy metals in water and sediment of the Liwagu River and a non-impacted mudflows of Mansahaban River. Water and sediment were collected from four sampling stations on each river. Water samples were filtered with 0.45 μm membrane filter and acidified to pH110 mg/kg and >0.02 mg/L, respectively. The correlations coefficient shows that there were significant relationship between heavy metals in water and sediment from Liwagu and Mansahaban River (0.413<r<0.888, p<0.05). For conclusion, the quality of water from both river are fairly the same but not for the sediment. However, further in depth investigation is needed to identify a wider perspective towards the behavior of heavy metals prior to mudflows event in Ranau, North Borneo of Malaysia.","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"131 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80846955","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}
Pub Date : 2018-08-01DOI: 10.26480/GBR.02.2018.31.33
ukrimah Abdullah, Mohd Parid Mamat, Abang Ahmad Abang Morni, Thanlany Kamri, M. Yacob, L. H. Fui
Coastal erosion is a concern to coastline management, and it affects the socio-economic well-being of local communities. The rehabilitation of Selabat Mudflats Nature Reserve (SMNR) in Sarawak is one of the most impressive achievements of the “Mangrove and Suitable Tree Species Planting at the National Coastline Program” implemented by the Ministry of Natural Resources and Environment (NRE). The rehabilitation efforts began in 2009, where 20 hectares of Rhizophora mucronata were planted and followed by an additional 1.7 hectares of Casuarina equisetifolia. Previously, this area was a sandy coastline where coastal erosion occurred every year causing local loss of land and properties. However, through conservation and rehabilitation efforts, this area was restored and is now able to generate more income for local communities as well as playing a protective role against coastal erosion caused by coastal waves and strong winds. In 2016, this study was conducted to assess the economic impacts of SMNR rehabilitation. The findings from a sample of 42 households showed that the income generated for local communities around SMNR amounted to RM250, 320 per month or RM3, 003,840 per year. A non-user survey of 401 samples was also conducted, using Contingent Valuation Method to estimate the economic value of SMNR rehabilitation. The result showed the economic value of rehabilitation of SMNR was RM39 million for the year 2016 or RM195, 980 per hectare. These findings showed that the function of rehabilitation and conservation of mangroves forests against coastal erosion brings positive economic impacts. Rehabilitation and conservation of mangrove areas in Malaysia should be given more attention as global warming and rising sea level are going to have negative impacts on coastal settlements. Wise decision-making in the utilisation and allocation of limited resources is important particularly in the context of conflict between conservation and other development that led to its destruction.
{"title":"THE ECONOMIC IMPACTS OF REHABILITATION OF SELABAT MUDFLATS NATURE RESERVE, KUCHING, SARAWAK","authors":"ukrimah Abdullah, Mohd Parid Mamat, Abang Ahmad Abang Morni, Thanlany Kamri, M. Yacob, L. H. Fui","doi":"10.26480/GBR.02.2018.31.33","DOIUrl":"https://doi.org/10.26480/GBR.02.2018.31.33","url":null,"abstract":"Coastal erosion is a concern to coastline management, and it affects the socio-economic well-being of local communities. The rehabilitation of Selabat Mudflats Nature Reserve (SMNR) in Sarawak is one of the most impressive achievements of the “Mangrove and Suitable Tree Species Planting at the National Coastline Program” implemented by the Ministry of Natural Resources and Environment (NRE). The rehabilitation efforts began in 2009, where 20 hectares of Rhizophora mucronata were planted and followed by an additional 1.7 hectares of Casuarina equisetifolia. Previously, this area was a sandy coastline where coastal erosion occurred every year causing local loss of land and properties. However, through conservation and rehabilitation efforts, this area was restored and is now able to generate more income for local communities as well as playing a protective role against coastal erosion caused by coastal waves and strong winds. In 2016, this study was conducted to assess the economic impacts of SMNR rehabilitation. The findings from a sample of 42 households showed that the income generated for local communities around SMNR amounted to RM250, 320 per month or RM3, 003,840 per year. A non-user survey of 401 samples was also conducted, using Contingent Valuation Method to estimate the economic value of SMNR rehabilitation. The result showed the economic value of rehabilitation of SMNR was RM39 million for the year 2016 or RM195, 980 per hectare. These findings showed that the function of rehabilitation and conservation of mangroves forests against coastal erosion brings positive economic impacts. Rehabilitation and conservation of mangrove areas in Malaysia should be given more attention as global warming and rising sea level are going to have negative impacts on coastal settlements. Wise decision-making in the utilisation and allocation of limited resources is important particularly in the context of conflict between conservation and other development that led to its destruction.","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"133 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79357067","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}
Pub Date : 2018-08-01DOI: 10.26480/MJG.02.2018.33.38
I. Ismail, Wan Salihin Wong Abdullah, R. Zakaria
Sea level rise around the world caused by global warming since decade and effects on coastal especially country below mean sea level and country island. The prediction of sea level rise by 2100 is over 3m. Sea level rise increases caused by melting ice and thermal expansion. The impact of sea level rise concentrated along the coastal area. This paper studied the impact of sea level rise to physical parameters along the East Coast of Peninsular Malaysia. Seven physical variables such as geomorphology, shoreline change rate, coastal slope, lithology, maximum wave height, mean tidal range and sea level change were chosen to find an physical vulnerability index. The index also was mapped using ArcGIS software to picture the vulnerability. The worst area for physical vulnerability index is along the Pahang coastline especially Kuantan district. The prevention and adaptation from government and nongovernment agencies should be taken to reduce the effects of sea level rise.
{"title":"PHYSICAL IMPACT OF SEA LEVEL RISE TO THE COASTAL ZONE ALONG THE EAST COAST OF PENINSULAR MALAYSIA","authors":"I. Ismail, Wan Salihin Wong Abdullah, R. Zakaria","doi":"10.26480/MJG.02.2018.33.38","DOIUrl":"https://doi.org/10.26480/MJG.02.2018.33.38","url":null,"abstract":"Sea level rise around the world caused by global warming since decade and effects on coastal especially country below mean sea level and country island. The prediction of sea level rise by 2100 is over 3m. Sea level rise increases caused by melting ice and thermal expansion. The impact of sea level rise concentrated along the coastal area. This paper studied the impact of sea level rise to physical parameters along the East Coast of Peninsular Malaysia. Seven physical variables such as geomorphology, shoreline change rate, coastal slope, lithology, maximum wave height, mean tidal range and sea level change were chosen to find an physical vulnerability index. The index also was mapped using ArcGIS software to picture the vulnerability. The worst area for physical vulnerability index is along the Pahang coastline especially Kuantan district. The prevention and adaptation from government and nongovernment agencies should be taken to reduce the effects of sea level rise.","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83111822","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}
Pub Date : 2018-08-01DOI: 10.26480/MJG.02.2018.22.25
Nordin Sakke, Mohamad Tahir Mapa, A. Saudi
{"title":"ANALYSIS OF SEVERAL HYDROLOGICAL-DROUGHT DURATION PARAMETERS IN MENGALONG RIVER BASIN, SIPITANG, SABAH","authors":"Nordin Sakke, Mohamad Tahir Mapa, A. Saudi","doi":"10.26480/MJG.02.2018.22.25","DOIUrl":"https://doi.org/10.26480/MJG.02.2018.22.25","url":null,"abstract":"","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80980992","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}
Pub Date : 2018-08-01DOI: 10.26480/MJG.02.2018.17.21
S. Thiruchelvam, R. S. Muda, Azrul Ghazali, Fatin Faiqah Norkhairi, K. N. Mustapha, N. Yahya, R. Sulaiman, Z. C. Muda
{"title":"INCEPTION OF 3Es IN PROMOTING DISASTER RESILIENT COMMUNITIES LIVING NEAR HYDROPOWER DAMS OF PENINSULAR MALAYSIA","authors":"S. Thiruchelvam, R. S. Muda, Azrul Ghazali, Fatin Faiqah Norkhairi, K. N. Mustapha, N. Yahya, R. Sulaiman, Z. C. Muda","doi":"10.26480/MJG.02.2018.17.21","DOIUrl":"https://doi.org/10.26480/MJG.02.2018.17.21","url":null,"abstract":"","PeriodicalId":53054,"journal":{"name":"Malaysian Journal of Geosciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87695617","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}
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