Assessment of sea water inundation along Daboo creek area in Indus Delta Region, Pakistan

Zia, Ibrahim; Zafar, Hina; Shahzad, Muhammad Imran; Meraj, Mohsin; Kazmi, Jamil Hasan

doi:10.1007/s11802-017-3350-4

Cited by 23 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The soil of IDR is less resistant to ocean hydro dynamics so the deltaic shoreline recede at average rate of 50 m/y along the central delta coast [35]. SLR followed by sea-water intrusion is claiming more land and changing the geomorphology of the low-lying land masses in the Indus Delta [32,39,40]. A SLR of about 1 meter is expected to sink or sea-encroach an area of 3750 km 2 in the Indus Delta [30].…”

Section: Background Of the Studymentioning

confidence: 99%

See 1 more Smart Citation

Spatial and Temporal Variability of Open-Ocean Barrier Islands along the Indus Delta Region

et al. 2019

Self Cite

View full text Add to dashboard Cite

Barrier islands (BIs) have been designated as the first line of defense for coastal human assets against rising sea level. Global mean sea level may rise from 0.21 to 0.83 m by the end of 21st century as predicted by the Intergovernmental Panel on Climate Change (IPCC). Although the Indus Delta covers an area of 41,440 km² surrounded by a chain of BIs, this may result in an encroachment area of 3750 km2 in Indus Delta with each 1 m rise of sea level. This study has used a long-term (1976 to 2017) satellite data record to study the development, movement and dynamics of BIs located along the Indus Delta. For this purpose, imagery from Landsat Multispectral Scanner (MSS), Thematic Mapper (TM), Enhanced Thematic Mapper Plus (ETM+), and Operational Land Imager (OLI) sensors was used. From all these sensors, the Near Infrared (NIR) band (0.7–0.9 µm) was used for the delineation and extraction of the boundaries of 18 BIs. It was found that the area and magnitude of these BIs is so dynamic, and their movement is so great that changes in their positions and land areas have continuously been changing. Among these BIs, 38% were found to be vulnerable to oceanic factors, 37% were found to be partially vulnerable, 17% remained partially sustainable, and only 8% of these BIs sustained against the ocean controlling factors. The dramatic gain and loss in area of BIs is due to variant sediment budget transportation through number of floods in the Indus Delta and sea-level rise. Coastal protection and management along the Indus Delta should be adopted to defend against the erosive action of the ocean.

show abstract

Section: Background Of the Studymentioning

confidence: 99%

“…IDR is located between the Indian border along 'Sir Creek' on the east to the 'Hub River' on the west having length of 320 km and forming IDR ( Figure 1). IDR is located at the head of the Arabian Sea, between Korangi Creek and the Rann of Kutch [30,40]. IDR has 22 tidal creeks which supply the sediment budgets to the BI chain.…”

Section: Study Areamentioning

confidence: 99%

Spatial and Temporal Variability of Open-Ocean Barrier Islands along the Indus Delta Region

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Memon et al [29] reported about drinking water contamination in the Southern districts of Sindh province of Pakistan. Kalhoro et al [30] and Zia et al [31] reported about seawater intrusion into the aquifers of deltaic areas of Pakistan. Recently Khuhawar et al [27] assessed water quality of seven sampling stations of the Indus Delta and reported about contamination of most of the sampling stations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of drinking water quality using the water quality index (WQI), the synthetic pollution index (SPI) and geospatial tools in Thatta district, Pakistan

Solangi¹,

Siyal²,

Babar³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

The objective of the present study was to evaluate the quality of groundwater in the deltaic region of the Indus River in district Thatta, Pakistan. In the region, the groundwater is widely used for drinking purposes. Due to excessive abstraction rates of groundwater, a significant amount of seawater intrudes into the aquifers. The situation is, furthermore aggravated by dwindling flows of freshwater from the river Indus. Thus, groundwater samples (100) were analyzed for different physicochemical parameters. A number of water quality parameters crossed the WHO guidelines. The WQI model revealed that 8%, 57%, 20%, and 15% of the samples were good, poor, very poor and unsuitable for drinking purposes, respectively. Likewise, the SPI model indicated that 10%, 55%, 19%, and 16% were slightly polluted, moderately polluted, highly polluted and unsuitable for drinking. Though the model's input is different, the proportionate of ranking revealed a significant correlation (R 2 = 0.78) between the outcomes of both models. The geospatial mapping of physicochemical parameters, WQI, and SPI model outcomes indicated that most of the groundwater resource in the study area is contaminated, thus not suitable for drinking purposes. The methodology developed in this study is extendable to other similar environments in the world.

show abstract

“…The sediments usually deposited during the stable ocean condition when the energy of waves is low and the deposited soft sediments in the shelves are driven away from the coast by the action of longshore drift and high wave energy [43]. The wave and wind are important factors for changing the nourishment and erosion of the coastal environment and development of urban areas along the Sindh coastal zone [15,68,69].…”

Section: Hydrodynamics Of the Sindh Coastal Zonementioning

confidence: 99%

Coastline Vulnerability Assessment through Landsat and Cubesats in a Coastal Mega City

et al. 2020

Self Cite

View full text Add to dashboard Cite

According to the Intergovernmental Panel on Climate Change (IPCC), global mean sea levels may rise from 0.43 m to 0.84 m by the end of the 21st century. This poses a significant threat to coastal cities around the world. The shoreline of Karachi (a coastal mega city located in Southern Pakistan) is vulnerable mainly due to anthropogenic activities near the coast. Therefore, the present study investigates rates and susceptibility to shoreline change using a 76-year multi-temporal dataset (1942 to 2018) through the Digital Shoreline Analysis System (DSAS). Historical shoreline positions were extracted from the topographic sheets (1:250,000) of 1942 and 1966, the medium spatial resolution (30 m) multi-sensor Landsat images of 1976, 1990, 2002, 2011, and a high spatial resolution (3 m) Planet Scope image from 2018, along the 100 km coast of Karachi. The shoreline was divided into two zones, namely eastern (25 km) and western (29 km) zones, to track changes in development, movement, and dynamics of the shoreline position. The analysis revealed that 95% of transects drawn for the eastern zone underwent accretion (i.e., land reclamation) with a mean rate of 14 m/year indicating that the eastern zone faced rapid shoreline progression, with the highest rates due to the development of coastal areas for urban settlement. Similarly, 74% of transects drawn for the western zone experienced erosion (i.e., land loss) with a mean rate of −1.15 m/year indicating the weathering and erosion of rocky and sandy beaches by marine erosion. Among the 25 km length of the eastern zone, 94% (23.5 km) of the shoreline was found to be highly vulnerable, while the western zone showed much more stable conditions due to anthropogenic inactivity. Seasonal hydrodynamic analysis revealed approximately a 3% increase in the average wave height during the summer monsoon season and a 1% increase for the winter monsoon season during the post-land reclamation era. Coastal protection and management along the Sindh coastal zone should be adopted to defend against natural wave erosion and the government must take measures to stop illegal sea encroachments.Remote Sens. 2020, 12, 749 2 of 24 developments in coastal areas [1,2]. Therefore, shoreline indicators are used for a consistent representation of a shoreline. The most common shoreline indicators are the tidal datum (e.g., a specific elevation at the land-ocean boundary) and visually discernible features (e.g., a revetment structure, an erosion scarp, a previous high-tide high-water level, low-tide low-water level, or dune vegetation line, etc.) [3][4][5][6][7][8]. The shoreline is an indicator of the ecological health of coastal areas [3,[9][10][11]. In past decades, the development of mega-infrastructure projects in coastal areas for urbanization/industrialization has placed more stress on the coastal ecosystem and changed ocean hydrodynamics [12][13][14][15][16]. Unplanned coastal development coupled with the natural action of ocean processes has led to the increasing vulnerability of low lying coasta...

show abstract

Assessment of sea water inundation along Daboo creek area in Indus Delta Region, Pakistan

Cited by 23 publications

References 14 publications

Spatial and Temporal Variability of Open-Ocean Barrier Islands along the Indus Delta Region

Spatial and Temporal Variability of Open-Ocean Barrier Islands along the Indus Delta Region

Evaluation of drinking water quality using the water quality index (WQI), the synthetic pollution index (SPI) and geospatial tools in Thatta district, Pakistan

Coastline Vulnerability Assessment through Landsat and Cubesats in a Coastal Mega City

Contact Info

Product

Resources

About