Indian Journal of Geo-Marine Sciences 

About: Indian Journal of Geo-Marine Sciences is an academic journal. The journal publishes majorly in the area(s): Biology & Geology. It has an ISSN identifier of 0379-5136. Over the lifetime, 304 publications have been published receiving 1164 citations.

Application of cedarwood oil methyl ester with carbon nano wires in marine engine studies.

Abstract: Present study is focused to improve biodiesel from Cedar Wood Oil (CWO) and appraise its effect on the engine performance and emission. Cedarwood is found to be appropriate for biodiesel production on a large scale. CWO extraction was done by combination of expeller and solvent extraction method. Transesterification method was carried out by addition NaOH and methanol to form fatty acid methyl ester of cedarwood oil. Further, experimental investigation was conducted in a single cylinder naturally aspirated direct injection compression ignition engine coupled with eddy current dynamometer. Engine was improved for better performance and reduced emissions.

Relationship of LST, NDBI and NDVI using Landsat-8 data in Kandaihimmat Watershed, Hoshangabad, India

Abstract: Normalized Difference Vegetation Index (NDVI) and Normalized Difference Built-up Index (NDBI) have been computed and their relationships with Land surface temperature (LST) in each season were examined. LST retrieved by thermal data analysis represents the spatial and temporal distribution of surface temperature. NDBI is describing the built-up index and NDVI the proportion of vegetation in the watershed. Relationships of LST with NDBI & NDVI were developed in each season. Correlation results of LST & NDBI has shown strong positive relationship i.e. R 2 = 0.991 in Jan.2016, 0.981 in May 2016 & 0.965 in Oct.2016, where as strong negative correlation were found in between LST & NDVI i.e. R 2 = 0.993, 0.992, & 0.911 in each season. Relationship between NDVI & NDBI was also developed and is showing strong negative correlation i.e. R 2 = 0.979, 0.988, & 0.913.

Coastal erosion and mitigation methods - global state of art.

Abstract: Coastal erosion is assuming large proportions these days. Global climate change coupled with local attributes is eroding the coasts of the world in alarming proportions. Most of the conventional protection methods are hard, short lived, expensive and not eco-friendly. Trend in coastal erosion mitigation and protection has been shifting these days towards soft but novel, eco-friendly methods. Pro-active methods are being developed and used which are eco-friendly, construction-friendly, cheaper and which also reasonably address the root cause of the problem without much ‘side effects’. Many non-traditional ways to armor, stabilize or restore beaches, including the use of patented precast concrete units, geotextile sand-filled bags, green belts, bio-engineering, sand fencing, beach-face dewatering systems, integrated costal protection methods are being used. Retreat from the coast is also thought about, in many circles. Present study consists the global coastal erosion scenario and also some of the state of the art soft and pro-active erosion mitigation methods.

Optimal Path Planning of Unmanned Surface Vehicles

Abstract: Present study reviews the current methodologies adopted for optimal path planning of single unmanned surface vehicles and studies associated with swarm of unmanned surface vehicles. This also discusses the challenges and scopes, which can act as objectives, for future research towards path planning of such marine craft.

Sea cucumber (Holothuria tubulosa Gmelin, 1790) culture under marine fish net cages for potential use in integrated multi-trophic aquaculture (IMTA)

Abstract: In this study, integrated aquaculture of Mediterranean sea cucumber species Holothuria tubulosa under finfish net cages was investigated. To evaluate whether H.tubulosa can be reared under net cage farms without additional feed and to compare growth performances, three underwater ranches (10x10m), just below a net cage (A), between the net cages (B) and 750 m away from the net cage systems (K) were set. Fifty sea cucumbers (92.81±2.29 g) were placed into each research station and growth performances like specific growth rate (SGR) and weight gain were observed for 90 days. SGR of sea cucumbers in stations A, B and K were 0.32±0.04, 0.22±0.02 and 0.10±0.01 %/d, respectively. The highest mean weight gain 31.11±0.84 g was recorded at station A where the lowest was in station K as 8.89±0.12 g. Organic carbon and organic material amount of research stations significantly affected the final mean weights of sea cucumbers where the highest growth was determined at the stations A and B. The results suggest that integrated multi-trophic aquaculture (IMTA) systems combined with finfish and sea cucumber H. tubulosa under net cages would provide by-products to aquaculture farms without an extra feed costs in the Mediterranean Sea.