The estuaries in the densely populated tropical coasts like Kerala (SW India) have been subjected to severe degradation due to various kinds of human interventions. Here, we report the case of environmental degradation of Paravur estuary in southern Kerala, southwest India, as an example. Large-scale extraction of alluvial deposits (sand and brick clay), improper engineering constructions, and other developmental initiatives are some of the interventions that have imposed immense stress on the system. Indiscriminate extraction of sand and clay has disrupted a major part of the drainage network at its upstream end, leaving the alluvial belt almost completely water logged. Land use changes show a significant increase in the water spread area of the estuary (6.31 to 7.85 km2), over the last century, with a concomitant decrease in alluvial/floodplain deposits (4.95 to 2.12 km2). The engineering interventions like the Flood Water Outlet System (FWOS) and its poor maintenance imposed marked changes in the sediment balance of the coastal zone, which ultimately led to the development of a flood tide island (FTI) (0.10 km2) in the estuary. The growth of the island, if not arrested by appropriate corrective measures, would lead to filling up of a greater part of the estuary at its southwestern end in the near future. The corresponding dearth of sand in the littoral zones on the other hand could exacerbate the hungry water effect of coastal waters. This, in turn, aggravates coastal erosion in the cliffed coast in the southern side of the FWOS. Considering the extent of human interventions in the estuary, an attempt has been made in this paper to address in detail about the different causes and effects of degradation of the system. Based on the study, a set of recommendations are also drawn to revive the Paravur estuary in particular and tropical estuaries of similar kinds in general.
Arabian Journal of Geosciences – Springer Journals
Published: Aug 14, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera