Earth Science Malaysia (ESMY)

USING THREE THERMAL AMPLITUDE MODELS FOR ESTIMATING THE DAILY GLOBAL SOLAR RADIATION AS A SOURCE OF CLEAN ENERGY FROM MEASURED TEMPERATURES IN SAUDI ARABIA

UPHOLE REFRACTION SURVEY OF THE VELOCITY REGIMES IN SOUTH-EASTERN PART OF NIGER DELTA NIGERIA

ABSTRACT

USING THREE THERMAL AMPLITUDE MODELS FOR ESTIMATING THE DAILY GLOBAL SOLAR RADIATION AS A SOURCE OF CLEAN ENERGY FROM MEASURED TEMPERATURES IN SAUDI ARABIA

Journal: Earth Science Malaysia (ESMY)

Amonieah, J., Amakiri, A.R.C., Chukwu, C.B

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2024.79.83

Uphole refraction survey of the velocity regimes in South-Eastern part of Niger Delta, Nigeria was carried out using a 12-channel seismograph: Mc SEIS 160M Model 1115. The study presents a regional weathering structure of the area, the velocities and depths of the weathered layers were calculated from the travel time of the seismic waves. The data were interpreted using the time – intercept method which revealed that the low velocity layer was fairly variable in thickness in the region, varying between 24.5m and 25.8m, with a regional average value of 25.12m. The weathered and consolidated layers have average Compressional wave velocities of 944.0m/s and 1907.69m/s respectively. The knowledge from the result of this study can be applied in oiland ground water exploration plans.

Pages 79-83
Year 2024
Issue 2
Volume 8

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UPHOLE REFRACTION SURVEY OF THE VELOCITY REGIMES IN SOUTH-EASTERN PART OF NIGER DELTA NIGERIA

ABSTRACT

UPHOLE REFRACTION SURVEY OF THE VELOCITY REGIMES IN SOUTH-EASTERN
PART OF NIGER DELTA NIGERIA

Journal: Earth Science Malaysia (ESMY)

Amonieah, J., Amakiri, A.R.C., Chukwu, C.B

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2024.79.83

Uphole refraction survey of the velocity regimes in South-Eastern part of Niger Delta, Nigeria was carried out
using a 12-channel seismograph: Mc SEIS 160M Model 1115. The study presents a regional weathering structure of the area, the velocities and depths of the weathered layers were calculated from the travel time of the seismic waves. The data were interpreted using the time – intercept method which revealed that the low velocity layer was fairly variable in thickness in the region, varying between 24.5m and 25.8m, with a regional average value of 25.12m. The weathered and consolidated layers have average Compressional wave velocities
of 944.0m/s and 1907.69m/s respectively. The knowledge from the result of this study can be applied in oil and ground water exploration plans.

Pages 79-83
Year 2024
Issue 2
Volume 8

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60 YEAR TREND ANALYSIS OF EXTREME RAINFALL INDICES OVER BANGLADESH

ABSTRACT

60 YEAR TREND ANALYSIS OF EXTREME RAINFALL INDICES OVER BANGLADESH

Journal: Earth Science Malaysia (ESMY)

Sania Binte Mahtab

This is an open access journal distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2024.52.67

This study investigated the patterns of extreme daily rainfall indices over eight meteorological stations in Bangladesh from 1961 to 2020, utilizing monthly and seasonal data sets. The climate change-related indicators comprised frequency-based indices: R10mm, R20mm, CDD, CWD and Intensity-based indices: RX1day, RX5day, R95p, R99p, PRCPTOT, SDII. The amplitude of trends in extreme rainfall indices time series was estimated using the nonparametric Sen’s slope estimator method, and the statistical significance of the trends was assessed using the Mann–Kendall test. The result shows that rainfall in pre-monsoon has an increasing trend except for Dhaka station, with an increasing trend for monsoon Chittagong, Barisal, Maymensingh, and Rangpur, oppositely decreasing trend in the dry season for Dhaka, Barisal, Rangpur and Sylhet with the none-significant trend for any season. Frequency Indices had a significant increasing trend in Mymensingh, Rajshahi, and Rangpur stations, where Intensity Indices are followed by Rangpur station. Seasonal RX1 day and RX5 days there were no significant increases or decreases with time. Overall, rainfall trend analysis is critical in a variety of sectors, including water resource management, agriculture, climate change research, disaster risk reduction, and ecosystem management. It contributes to sustainable development and environmental preservation by providing essential information for planning and decision-making.

Pages 52-67
Year 2024
Issue 2
Volume 8

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PALEONTOLOGY, STRATIGRAPHY, PALEOGEOGRAPHY OF TWO HUNDREDS SOUTHERN TETHYAN CAMPANIAN-PALEOGENE ROTALIID BENTHIC FORAMINIFERAL SPECIES

ABSTRACT

PALEONTOLOGY, STRATIGRAPHY, PALEOGEOGRAPHY OF TWO HUNDREDS SOUTHERN TETHYAN CAMPANIAN-PALEOGENE ROTALIID BENTHIC FORAMINIFERAL SPECIES

Journal: Earth Science Malaysia (ESMY)

Haidar Salim Anan

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2024.39.51

Two hundreds calcareous benthic foraminiferal species of the Suborder Rotaliina belong to sixty genera from twenty countries in the Southern Tethys (Chile, Argentina, Angola, Nigeria, Tanzania, Mali, Algeria, Tunisia, Egypt, Palestine, Lebanon, Syria, Jordan, Saudi Arabia (SA), Yemen, Qatar, United Arab Emirates (UAE), Iraq, Iran and Pakistan) have been studied. The modern taxonomical consideration of the species is used. The recorded species were previously noted in the literatures, while two of them are believed here as new: Stainforthia abdelkarimi and Siphonodosaria misrensis. Forty species of them are recorded from Egypt (about 41%), twenty seven from Pakistan (~ 28%), ten from UAE (~ 10.5%), six from Qatar (~ 6%), four from each of Algeria and Iran (~ 4%), three from three from Jordan (~ 3%), two from each of Palestine and Iran (~ 2%), and only one from each of Iraq and India (~ 1%). Most of the Southern Tethyan recorded species are endemic to their original description, while five of them are also recorded in some other Southern Tethys, and also Northern Tethyan countries (Atlantic Ocean, France, Spain, Slovenia, Austria, Turkey, Turkmenia and Kazakhstan).

Pages 39-51
Year 2024
Issue 2
Volume 8

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MODELING OF COAL-BEARING ROCK FORMATIONS IN THE KUTAI BASIN, NORTH PANAJAM PASER REGENCY, KALIMANTAN BASED ON SATELLITE GRAVITY ANOMALY DATA

ABSTRACT

MODELING OF COAL-BEARING ROCK FORMATIONS IN THE KUTAI BASIN, NORTH PANAJAM PASER REGENCY, KALIMANTAN BASED ON SATELLITE GRAVITY ANOMALY DATA

Journal: Earth Science Malaysia (ESMY)

Sehah, Naomi Sept Rizqi, Raden Farzand Abdullatif

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2024.32.38

North Panajam Paser Regency, Kalimantan Island, which is traversed by the Kutai Basin has very high coal fuel potential. The geological structure, depth and seam model of coal-bearing rock formations in the research area can be investigated through geophysical surveys using satellite gravity methods. Gravity field data is downloaded from the TOPEX website which comes from Geodesy Satellite (GeoSat) and European Remote Sensing Satellite-1 (ERS-1). The number of gravitational field data downloaded was 785 sets with an area of around 250 km2. The satellite gravity field data processing procedure includes several data corrections and reductions, as well as modeling and interpretation. The modeling and interpretation results show that the coal-bearing rock is estimated to be at a depth of 0 – 2,593.95 m for the AA’ section; 0 – 1,877.89 m for the BB’ section; and 0 – 1,558.59 m for the CC’ section.

Pages 32-38
Year 2024
Issue 2
Volume 8

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GEOCHEMICAL ASSESSMENT OF LIMESTONE DEPOSITS AROUND OMI ALAYO – OKELUSE, SOUTHWESTERN NIGERIA

ABSTRACT

GEOCHEMICAL ASSESSMENT OF LIMESTONE DEPOSITS AROUND OMI ALAYO – OKELUSE, SOUTHWESTERN NIGERIA

Journal: Earth Science Malaysia (ESMY)

Anthony Victor Alaba Oyeshomo

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.01.2024.27.31

Limestone deposits exposed at Omi-Alayo and Okeluse Forest Reserve were investigated in this study. 10 representative samples collected from both locations and were subjected to geochemical analyses using X-Ray Fluorescence method. Major and trace elements were employed for the determination of depositional environment. The results for the major oxide contents showed that mean values of CaO content ranges from 48.10 – 48.89% with mean value of 7.23% for SiO2. Fe2O3, MgO and Al2O3 concentration have mean values of 1.56%, 0.76% and 1.92% respectively. Other oxides TiO2, Na2O, K2O and P2O5 are low in concentration. For the loss of ignition, it varied from 35.24 to 41.07 with an average value of 38.69% indicating high carbonate content for the limestone. Limestone classification of Ca/Mg ratio and reciprocal MgO/CaO showed ratios range of 54.05 – 86.46 and 0.011-0.0.024 respectively. High content of Sr recorded for the limestone samples reveals a saline environmental condition for the deposits. Overall results showed that the Omi-Alayo and Okeluse limestone are pure limestone and were deposited in a shallow marine environmental condition and suitable for cement production.

Pages 27-31
Year 2024
Issue 1
Volume 8

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SCREENING OF GROWTH PROMOTING ENTOPHYTIC BACTERIA FOR SALINITY STRESS TOLERANCE

ABSTRACT

SCREENING OF GROWTH PROMOTING ENTOPHYTIC BACTERIA FOR SALINITY STRESS TOLERANCE

Journal: Earth Science Malaysia (ESMY)

Sayed Dildar Hussain, Javid Hussain, Wajid Ali, Zeeshan Haider

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.01.2024.21.26

Saline soil is characterized by a high concentration of salts, primarily sodium chloride. It is commonly found in dry and semiarid regions, coastal areas, and locations with elevated salt levels in the parent material. The presence of salinity in soil can have detrimental effects on plant growth, as the excessive salt content interferes with the plant’s ability to absorb water and nutrients. This osmotic imbalance makes it challenging for plants to extract water from the soil, negatively impacting their growth. In Pakistan, salinity poses a significant challenge in agriculture, affecting approximately 6.6 million hectares of land. To address this issue, a study was conducted with the main objectives of identifying endophytic bacteria and determining their threshold level of tolerance to high salinity stress. The researchers employed various techniques, including the isolation of endophytic bacteria on L.B media plates, morphological assessments of bacteria, salt tolerance isolation techniques, and biochemical methods.The results of the study revealed that the endophytic bacteria isolated could withstand salinity stress levels of up to 1700mM, which represents their maximum capacity to handle such conditions. After 24 hours of incubation, changes in colony color, diameter, status, and appearance were observed. The biochemical analysis demonstrated positive catalase activity, indicated by the formation of bubbles in a liquid form, as well as a change in the color of the solution.In conclusion, the study highlights the potential of endophytic bacteria as beneficial tools for enhancing plant.

Pages 21-26
Year 2024
Issue 1
Volume 8

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A COMPREHENSIVE ANALYSIS OF SOIL AND WATER CONTAMINATION NEAR AUTO-MECHANIC WORKSHOPS IN WARRI AND ENVIRON SOUTH-SOUTH, NIGERIA

ABSTRACT

A COMPREHENSIVE ANALYSIS OF SOIL AND WATER CONTAMINATION NEAR AUTO-MECHANIC WORKSHOPS IN WARRI AND ENVIRON SOUTH-SOUTH, NIGERIA

Journal: Earth Science Malaysia (ESMY)

Aladin, A. Ese, Ekewenu E. Emuobome, Osisanya O. Wasiu

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.01.2024.07.20

The pH values of soil samples collected from the topsoil to a depth of 50cm range from 5.78 to 6.64, with an average of 6.284, indicating slightly acidic soil. Water samples near auto-mechanic workshops fall below NSDWQ and WHO standards. Soil heavy metal levels mostly meet ACV and Dutch guidelines, except for Iron (Fe), Copper (Cu), Zinc (Zn), Cadmium (Cd), and Chromium (Cr). Soil contamination analysis shows a high to extreme degree of contamination, likely from the auto-mechanic workshop. Positive correlations between metal pairs suggest a common source and transport to the soil. Principal Component Analysis (PCA) of soil samples reveals Cu, Zn, Fe, Ni, and Pb as dominant metals, while Ni-Cr shows negative correlations with others. In water samples, Cu, Cd, and Co dominate, indicating a different contamination source. Soil and water samples generally meet NSDWQ and WHO standards, but Total Dissolved Solids (TDS), Electrical Conductivity (EC), and Salinity exceed these standards. Understanding these findings is crucial for managing and mitigating contamination risks near auto-mechanic workshops.

Pages 07-20
Year 2024
Issue 1
Volume 8

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TAXONOMIC CONSIDERATION OF THE SOUTHERN TETHYAN ROTALIID BENTHIC FORAMINIFERAL MEMBERS OF THE GENUS Cibicidoides

ABSTRACT

TAXONOMIC CONSIDERATION OF THE SOUTHERN TETHYAN ROTALIID BENTHIC FORAMINIFERAL MEMBERS OF THE GENUS Cibicidoides

Journal: Earth Science Malaysia (ESMY)

Haidar Salim Anan

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.01.2024.01.06

Eighteen Cibicidoides Rotaliid benthic foraminiferal species were erected from three localities in the Southern Tethys Chile, Egypt and Pakistan. An American diagnostic west hemisphere species C. vulgaris is added to the assemblage, which was later is also recorded from another localities in the eastern hemisphere in the Southern Tethys: Egypt and Iran . One of the identified species is believed here to be new: C. chilensis. Environmental conditions of the identified species of the genus Cibicidoides represent middle-outer neritic environment (100-200 m) and show an affinity with Midway-Type Fauna “MTF”.

Pages 01-06
Year 2024
Issue 1
Volume 8

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ASSESSMENT OF RESERVOIR PERFORMANCE IN THE CZ FIELD, NIGER DELTA BASIN, UTILIZING INTEGRATED FACIES AND PETROPHYSICAL ANALYSES FOR PREDICTIVE MODELING

ABSTRACT

ASSESSMENT OF RESERVOIR PERFORMANCE IN THE CZ FIELD, NIGER DELTA BASIN, UTILIZING INTEGRATED FACIES AND PETROPHYSICAL ANALYSES FOR PREDICTIVE MODELING

Journal: Earth Science Malaysia (ESMY)

Chisom Kingsley Okwaraojimadu, Casmir Zanders Akaolisa, Okechukwu Ebuka Agbasi

This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Doi: 10.26480/esmy.02.2023.174.182

The “CZ” field refers to a promising hydrocarbon reservoir situated inside the Niger Delta region in Nigeria. The field is characterised by the presence of three distinct reservoir zones, namely the Agbada, Benin, and Akata formations. The research employed a multidisciplinary methodology to assess the hydrocarbon potential of the field, using techniques such as well log analysis, seismic interpretation, and petrophysical modelling. The findings of the research indicate that the “CZ” region has noteworthy potential for hydrocarbon resources. The aggregate assessed in-situ reserves of oil and gas amount to 1.2 billion barrels of oil equivalent (BOE) and 8.0 trillion cubic feet (TCF) of gas, correspondingly. The expected recovery factor for oil in the field is 20%, while for petrol it is predicted to be 80%. The study has identified a number of issues that want attention in order to advance the subject of “CZ.” The problems encompass several factors, namely the existence of water and gas within the reservoir, the intricate structural geology of the field, and the field’s distant geographical position. Notwithstanding these obstacles, the “CZ” sector exhibits the capacity to emerge as a significant hydrocarbon producer. The research offers a significant foundation for subsequent assessment and advancement of the discipline.

Pages 174-182
Year 2023
Issue 2
Volume 7

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