Md. Zakaria

Jahangirnagar University, Geological Sciences, Alumnus

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Senior Scientific Officer (SSO), Geological Oceanography Division, Bangladesh Oceanographic Research Institute (BORI), Government of Bangladesh.
B.Sc and M.S in Geological Sciences, Jahangirnagar University, Bangladesh.
Phone: +88-01917019838
Address: Room No.# 310-312, Engineering Building, BCSIR, Dr. Qudrat-i-Khuda Road, Dhanmondi, Dhaka-1205, Bangladesh

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Jayjit Majumdar

University of Kalyani

Annamalai University

National I nstitute for I nterdisciplinary Science and Technology (NIIST)

Christopher Baiyegunhi

tope alege

Venkatesan Selvaraj

Annamalai university, chidambaram

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Papers by Md. Zakaria

DETERMINATION OF SEDIMENT DISTRIBUTION AND SUSPENDED SEDIMENT DISCHARGE IN THE KUTUBDIA CHANNEL OF BANGLADESH

The Journal of NOAMI, 37(1-2):1-24, 2022

This study deals with the determination of sediment distribution and sediment discharge to unders... more This study deals with the determination of sediment distribution and sediment discharge to understand the sediment depositional processes in the Kutubdia Channel of the Cox s Bazar. The study area lies in the complex as well as diverse geological and hydrodynamic conditions. Total suspended solid (TSS), turbidity and sediment discharge have been studies to understand the input amount of sediment in the channel. Also, sediment mixing zone has been identified from the TSS study. From the analysis it is observed that the depositional system of the channel is active and undergoing accretion of sediment deposition. The channel mainly consists of fine sand sediment. The Kutubdia Channel has well connection with the Bay of Bengal in the north and south. Different grain-size parameters i.e, mean size, sorting, skewness, kurtosis, cumulative curve, provability curve along with bivariate plots of each parameter have been studied to delineate sediment distribution of the study area. Linear discrimination function (LDF) and Multigroup Discrimination Function (MDF) applied to differentiate sedimentary sub-environment shows shallow marine and deltaic environment setting. The source of sediment of the Kutubdia Channel may be medium to far distance and faced uniform energy condition with reworking wave process along the channel.

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Coastal and nearshore sediment data along the eastern coastal zone of Bangladesh of the northern Bay of Bengal

Data in Brief 47 (2023) 109028, 2023

A seafloor sediment dataset of 42 samples has been collected from the coastal and nearshore areas... more A seafloor sediment dataset of 42 samples has been collected from the coastal and nearshore areas of the northern Bay of Bengal, which is situated in the southern part of the eastern coastal zone of Bangladesh. From February 2018 to March 2019, Van Veen grab samplers were employed to gather samples at a depth of 4 m and 23 m. The unconsolidated bottom surface has been sampled, taking bathymetry and fishing boat accessibility into account. Using the dry sieving technique, grain size distribution analysis was performed on the obtained sediments. The retrieved dataset was measured to identify seafloor sediment grain size distribution and determine the sediment dynamics. This data can be used to delineate sediment characteristics, depositional processes, and the environment.

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Assessment of organic carbon and carbon stock in the sediments of the estuarine area of Naf River and Maheshkhali Channel, Bangladesh: Investigating the influence of sediment texture and depositional conditions

by Md. Zakaria and Mst. Tania Islam

Songklanakarin J. Sci. Technol. 45 (5), 552–560, 2023

This study deals with the relations of sediment texture and depositional conditions to the organi... more This study deals with the relations of sediment texture and depositional conditions to the organic carbon (OC) and carbon (C) stock distribution, and estimates C sequestration in the coastal estuaries of the Naf River and Maheshkhali Channel of Bangladesh. In this study, the average OC percentages were 0.65% and 0.55%, the C stocks were calculated as 9.02 t/ha and 9.87 t/ha, and the conversion of C stock to total C sequestration became 33.35 t CO2/ha and 36.54 t CO2/ha, with the monetary values $1000.42 and $1096.26 per hectar of the Naf River and Maheshkhali Channel estuaries, respectively. The distribution of OC and C stock mostly depends on the sedimentary depositional conditions and sediment texture, as well as on the existence of mangrove and salt marsh along the banks of the estuaries. Low energy and velocity conditions and unidirectional fluvial settings tend to increase the concentration of OC and C stock, and also moderate grain-size with poorly sorted sediment contains high OC and C stock. Transportation mode with two populations (traction and saltation) increases the concentration of OC and C stock by more than three populations. There is some effect from the mixing environment and heavy mineral concentration on the OC and C stock distributions.

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A comparison between Regular Square Grid and Basin or Sub-basin based analysis of Hypsometric Integral: A Case study for Maheshkhali, Inani & Dakshin Nhila Anticline of Cox's Bazar, Bangladesh

by Md. Zakaria and Md. Abul Kashem Majumder

— This study aims to find out a comparison between regular square grid and basin or sub-basin bas... more — This study aims to find out a comparison between regular square grid and basin or sub-basin based analysis of hypsometric integral: a case study for Maheshkhali, Inani & Dakshin Nhila anticline and their drainage basins of Cox's Bazar district of Bangladesh. It is necessary to study the hypsometric integral (HI) of the study area because of its location and it has been occurred several landslide incident, flash flood and also the area experienced a major earthquake in 1999. SRTM DEM and GIS software used to study the hypsometry of the area. In order to identify the hypsometry indices, also it has been used surface geology, lithology and structural maps. The study area comprises 34 small and medium size drainage basins and divided into 62 square grids by 4.29×4.29 km area per grid delineated by GIS tools. HI values found ranges from 0.13 to 0.55 for basins and sub-basins based analysis and 0.09 to 0.54 for regular square grid of the study area. The HI contour map for basins and regular square grids comparison shows some similar range of values. The intensity of values is different in some area. The comparison showed that the Hi values in Ukhia Upazila have some similarities but regular square grid showed higher Hi value in Ramu Upazila. The basin based Hi value of southern Maheshkhali and northern Cox's Bazar sadar shows higher than the square gird based value. But in case of northern Maheshkhali and Teknaf upazila, the HI value showed similar range of values and distribution. Also the distributions of Hi values are similar in Ukhia and Middle Maheshkhali upazila. In this case, the Hi value analysis on both basins based and square grid based have some similarities but basins based analysis are more accurate for this study area.

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Morphometric Analysis of Reju Khal Drainage Basin using Geographic Information System (GIS) and SRTM data

by Md. Zakaria, Md.Majadur Rahman, and Md. Abul Kashem Majumder

—This study aims to define the drainage morphometry of Reju Khal drainage basin using Shuttle Rad... more —This study aims to define the drainage morphometry of Reju Khal drainage basin using Shuttle Radar Topographic Mission (SRTM) Digital Elevation Model (DEM) data to evaluate the drainage condition of this river with the help of Geographical Information System (GIS) and Remote Sensing. The morphometric analysis of the Reju Khal drainage basin has been carried out through measurement of linear, areal and relief aspects. It is found that Reju Khal tributaries are of 6th order. Total 1008 streams are identified of which 796 are first order, 160 are second order, 34 are third order, 9 are fourth order, 3 are fifth order and 1 sixth order stream. Drainage patterns of stream network from the basin have been observed as mainly of dendritic type in the major area also some have rectangular and some trellis drainage pattern in northeastern and eastern side of the area. 4th, 5th and 6th order streams have Bifurcation ratio (Rb) is near to 3.00, which indicate geomorpholgical control and 2nd and 3rd order streams have near to 5.00 which indicate the influence of structural control on the development of the drainage pattern. The presence of the maximum number of the first order segments and the values of the mean stream length ratio indicate differences in slope and topographic conditions of the basin. The slope map of the area reveals low and very gentle slope basin. Drainage density and texture ratio shows that the texture of basin is moderate which indicate medium resistant or permeable subsoil materials, moderate vegetation and infiltration; the drainage texture shows fine texture indicating soft or weak rocks unprotected by vegetation. Compactness coefficient, circulatory ratio and elongation ratio shows that the shape of basin almost circular. The elongation ratio, length of overland flow and relief map of the basin shows that the major part of basin is of low relief and very young topography. The morphometric analysis of drainage basin reveal that the drainage basin is low laying flood prone drainage basin and have moderate to good groundwater prospect. There is also need to examine other factor of land use, climate, soil type, geological structure and stratigraphy to know hydrological process, landslide and flooding condition.

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Effects Of Rainfall And Maximum Temperature On Aman Rice Production Of Bangladesh: A Case Study For Last Decade

The study is conducted for the effect of climate variables (rainfall, maximum temperature) on Ama... more The study is conducted for the effect of climate variables (rainfall, maximum temperature) on Aman rice production and mapping in Bangladesh. We used time series data for the last decade (2003-2012) for rainfall and maximum temperature from BMD (Bangladesh Meteorological Department) and BBS (Bangladesh Bureau of Statistics) respectively. From the combined trend of rainfall and maximum temperature intensity (determined by GIS mapping), geographically Bangladesh is divided into four regions such as; NorthEastern Region, SouthEastern Region, SouthWestern Region and NorthWestern Region, in this research. In NorthEastern regions Aman production is proportional to rainfall and maximum temperature does not prominent variables which indicate the rainfall effect the rice production prominently. In the SouthEastern region rainfall and maximum temperature both are in repetitive and show less effect on production which indicates other variables are prominent in this region. There may have salinity and soil condition effect on the Aman rice production of this region. In SouthWestern region the both variables are prominent in this region. We know that most the area of the region is situated under tidal effect which may be the cause of production decrease. In NorthWestern region Aman production increased though rainfall decreased so significantly also average maximum temperature was high in this region. It implies that maximum temperature is the dominant factor in this region which increases the Aman rice production significantly. So, effect of maximum temperature becoming the dominant variable continuously for Aman rice production in the last decade of Bangladesh.

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Developing Conceptual Aquifer Geometry, Structural Geological Control and Possibility of Sea Water Intrusion in Cox's Bazar Area of Bangladesh

by Md. Zakaria and Md.Majadur Rahman

The research work deals with the hydrogeological condition of Cox's Bazar area in Bangladesh. Mos... more The research work deals with the hydrogeological condition of Cox's Bazar area in Bangladesh. Most of the area is covered by northern part of Inani anticline. The structure is elongated, broad crest, steep flank, box-like and asymmetrical anticline. It is very hard to measure aquifer geometry of a complex geological area like Inani anticline. Hydrogeologically the study area broadly divided into two zones; Zone-1: Alluvium and Zone-2: Complex geology. From the analysis of the individual log and subsurface hydrostratigraphic sections, eight confined aquifer (Aquifer A, Aquifer B, Aquifer C, Aquifer D, Aquifer E, Aquifer F, Aquifer G and Aquifer H) and one unconfined aquifer (Aquifer O) observed in the Complex geology zone and the Alluvium zone in the study area respectively. The water tables in the confined aquifers are lies in high depth but in case of unconfined aquifer the water table lies near to the surface. From the structural geological condition and position of the aquifers, it is not possible to mixing sea water with groundwater from the western side of the study area where the Bay of Bengal is situated. The northern extension of the aquifers occurred in the area cut by the Bakkhali River channel. Although the area is structurally plunged and topography increase toward south, the major portion of the city area lies in the topographically low land near the Bakkhali River. If the fresh water from the aquifers is removed in the area by extensive pumping of water or sea level rises or cyclonic storm or tidal surges occur; sea water can be intruded into the zone.

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DETERMINATION OF SEDIMENT DISTRIBUTION AND SUSPENDED SEDIMENT DISCHARGE IN THE KUTUBDIA CHANNEL OF BANGLADESH

The Journal of NOAMI, 37(1-2):1-24, 2022

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Coastal and nearshore sediment data along the eastern coastal zone of Bangladesh of the northern Bay of Bengal

Data in Brief 47 (2023) 109028, 2023

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