scholarly journals Tamil Nadu, Kerala and Karnataka floods of November 1992 --A meteorological study

MAUSAM ◽  
2022 ◽  
Vol 46 (1) ◽  
pp. 69-74
Author(s):  
RANJIT SINGH
Keyword(s):  
West Coast ◽  
Tamil Nadu ◽  
The West ◽  
Cyclonic Storm ◽  
Heavy Rains

 Observations made with the help of INSAT imageries in connection with the development and track of the Tuticorin cyclone which gave heavy rains causing devastating floods in Tamil Nadu. Kerala and Karnataka in November 1992. reveal the following . (i) The movement of the Cyclonic Storm (CS) was affected by the mid-tropospheric easterly and westerly troughs into which its circulation got embedded successively. (ii) The CS reintensified on approaching the Tamil Nadu coast. (iii) Near the west coast the cloud body of the deep depression moved over land ahead of its circulationwhich was still centred over sea.  

scholarly journals Coastal sea level response to the tropical cyclonic forcing in the north Indian Ocean

2014 ◽  
Vol 11 (1) ◽  
pp. 575-611
Author(s):  
P. Mehra ◽  
S. Mohan ◽  
P. Vethamony ◽  
K. Vijaykumar ◽  
T. M. Balakrishnan Nair ◽  
...  
Keyword(s):  
Sea Level ◽  
West Coast ◽  
East Coast ◽  
Meteorological Data ◽  
Linear Regression Analysis ◽  
North Indian Ocean ◽  
Energy Bands ◽  
The West ◽  
Cyclonic Storm ◽  
Sea Level Oscillations

Abstract. The study examines the observed storm-generated sea-level variation due to deep depression (Event-E1) in the Arabian Sea from 26 November–1 December 2011 and a cyclonic storm "THANE" (Event-E2) over the Bay of Bengal during 25–31 December 2011. The sea-level and surface meteorological measurements collected during these extreme events exhibit strong synoptic disturbances leading to storm surge up to 43 cm on the west coast and 29 cm on the east coast of India due to E1 and E2. E1 generated sea level oscillations at the measuring stations on the west coast (Ratnagiri, Verem and Karwar) and east coast (Mandapam and Tuticorin) of India with significant energy bands centered at periods of 92, 43 and 23 min. The surge dome has a duration of 92.6, 84.5 and 74.8 h at Ratnagiri, Verem and Karwar, respectively. However, on the east coast, the sea level oscillations during Thane were similar to those during calm period except for more energy bands centred at periods of ~ 100, 42 and 24 min at Gopalpur, Gangavarm and Kakinada, respectively. Multi-linear regression analysis shows that the local surface meteorological data (daily-mean wind and atmospheric pressure) is able to account for ~ 57% and ~ 70% of daily-mean sea-level variability along the east and west coast of India. The remaining part of variability observed in the sea level may be attributed to local coastal currents and remote forcing.

Sesamum radiatum Thonn. ex Hornem. (Pedaliaceae): addition to the flora of Tamil Nadu with taxonomic notes

2019 ◽  
Vol 42 (1) ◽  
pp. 43-48
Author(s):  
Sampath Kumar Krishnachandran ◽  
◽  
Kathiresan K. ◽  
Arumugum S. ◽  
◽  
...  
Keyword(s):  
West Coast ◽  
Western Ghats ◽  
Tamil Nadu ◽  
Wild Populations ◽  
The West ◽  
Plant Parts ◽  
Flora Of India ◽  
Present Collection ◽  
Field Identification

The introduction, occurrence and distribution of wild populations of Sesamum radiatum Thonn. ex Hornem. in India along with taxonomic notes on the nomenclature and identification of the species have been discussed in detail. The earlier reports of the taxon from Eastern & Western Ghats and elsewhere due to errors in identifications clarified and a field key furnished to facilitate the correct identity. Color photographs of the plant parts are also provided for easy field identification. The present collection from the West Coast of Kanniyakumari district forms an addition to the flora of Tamil Nadu and to the strand flora of India as well.

Cyperus javanicus Houtt. (Cyperaceae): Addition to the sedges flora of Tamil Nadu, India

2018 ◽  
Vol 41 (4) ◽  
pp. 403-406
Author(s):  
Sampath Kumar Krishnachandran ◽  
◽  
Kathiresan K. ◽  
◽  
◽  
...  
Keyword(s):  
West Coast ◽  
Tamil Nadu ◽  
The West

The occurrence and distribution of the sedge Cyperus javanicus Houtt., in Kanyakumari district along the west coast of Tamil Nadu, is recorded and added to the Flora of Tamil Nadu here with details.

scholarly journals Coastal sea level response to the tropical cyclonic forcing in the northern Indian Ocean

Ocean Science ◽  
2015 ◽  
Vol 11 (1) ◽  
pp. 159-173 ◽  
Author(s):  
P. Mehra ◽  
M. Soumya ◽  
P. Vethamony ◽  
K. Vijaykumar ◽  
T. M. Balakrishnan Nair ◽  
...  
Keyword(s):  
Sea Level ◽  
West Coast ◽  
Arabian Sea ◽  
East Coast ◽  
Tide Gauge ◽  
Meteorological Data ◽  
Linear Regression Analysis ◽  
The West ◽  
Cyclonic Storm ◽  
Sea Level Oscillations

Abstract. The study examines the observed storm-generated sea level variation due to deep depression (event 1: E1) in the Arabian Sea from 26 November to 1 December 2011 and a cyclonic storm "THANE" (event 2: E2) over the Bay of Bengal during 25–31 December 2011. The sea level and surface meteorological measurements collected during these extreme events exhibit strong synoptic disturbances leading to storm surges of up to 43 cm on the west coast and 29 cm on the east coast of India due to E1 and E2. E1 generated sea level oscillations at the measuring stations on the west coast (Ratnagiri, Verem and Karwar) and east coast (Mandapam and Tuticorin) of India with significant energy bands centred at periods of 92, 43 and 23 min. The storm surge is a well-defined peak with a half-amplitude width of 20, 28 and 26 h at Ratnagiri, Verem and Karwar, respectively. However, on the east coast, the sea level oscillations during Thane were similar to those during calm period except for more energy in bands centred at periods of ~ 100, 42 and 24 min at Gopalpur, Gangavaram and Kakinada, respectively. The residual sea levels from tide gauge stations in Arabian Sea have been identified as Kelvin-type surges propagating northwards at a speed of ~ 6.5 m s−1 with a surge peak of almost constant amplitude. Multi-linear regression analysis shows that the local surface meteorological data (daily mean wind and atmospheric pressure) is able to account for ~ 57 and ~ 69% of daily mean sea level variability along the east and west coasts of India. The remaining part of the variability observed in the sea level may be attributed to local coastal currents and remote forcing.

An annotated checklist of the mantis shrimps of India (Crustacea: Stomatopoda)

Zootaxa ◽  
2020 ◽  
Vol 4768 (2) ◽  
pp. 221-238
Author(s):  
JIGNESHKUMAR N. TRIVEDI ◽  
SHANE T. AHYONG ◽  
KAUESH D. VACHHRAJANI ◽  
APPUKUTTANNAIR BIJU KUMAR
Keyword(s):  
West Coast ◽  
Tamil Nadu ◽  
East Coast ◽  
Coastal Areas ◽  
Gujarat State ◽  
The West ◽  
Number Of Species ◽  
Indian Waters ◽  
Annotated Checklist ◽  
First Time

An annotated checklist of the mantis shrimps (Stomatopoda) occurring in India is compiled from published literature and specimens collected from coastal areas of Gujarat state. A total of 72 species, 35 genera, 10 families and 5 superfamilies reported from Indian waters are listed. Four species were recorded for the first time from Gujarat while one species, Erugosquilla hesperia (Manning, 1968), is confirmed for the first time from India. The maximum number of species was reported from Tamil Nadu (48 species), while fewest species were reported from Karnataka (2 species). The results also suggest that the east coast is more diverse (66 species) than the west coast of India (32 species). 

Eelgrass (Zostera marina) restoration on the west coast of Sweden using seeds

2016 ◽  
Vol 546 ◽  
pp. 31-45 ◽  
Author(s):  
E Infantes ◽  
L Eriander ◽  
PO Moksnes
Keyword(s):  
West Coast ◽  
Zostera Marina ◽  
The West

Changes in soil quality following humping/hollowing and flipping of pakihi soils on the West Coast, South Island New Zealand

2007 ◽  
pp. 265-270 ◽  
Author(s):  
S.M. Thomas ◽  
M.H.Beare C.D. Ford ◽  
V. Rietveld
Keyword(s):  
Organic Matter ◽  
Soil Quality ◽  
West Coast ◽  
Land Development ◽  
Hot Water ◽  
Limited Information ◽  
The West ◽  
Organic Matter Quality ◽  
Pasture Production ◽  
Soil C

Humping/hollowing and flipping are land development practices widely used on the West Coast to overcome waterlogging constraints to pasture production. However, there is very limited information about how the resulting "new" soils function and how their properties change over time following these extreme modifications. We hypothesised that soil quality will improve in response to organic matter inputs from plants and excreta, which will in turn increase nutrient availability. We tested this hypothesis by quantifying the soil organic matter and nutrient content of soils at different stages of development after modification. We observed improvements in soil quality with increasing time following soil modification under both land development practices. Total soil C and N values were very low following flipping, but over 8 years these values had increased nearly five-fold. Other indicators of organic matter quality such as hot water extractable C (HWC) and anaerobically mineralisable N (AMN) showed similar increases. With large capital applications of superphosphate fertiliser to flipped soils in the first year and regular applications of maintenance fertiliser, Olsen P levels also increased from values

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