01-05 December 2025
INCOIS, Hyderabad, India.
| Abstract Submission No. | ABS-08-0194 |
| Title of Abstract | Projected Decadal Sea Level Changes and Vertical Land Motion Effects under SSP2-4.5: Implications for the Puri Coast, East Coast of India |
| Authors | KARTHI J*, Prakash Chandre Mohanty, Sudheer Josephu, Balakrishnan Nair TM |
| Organisation | Indian National Centre for Ocean Information Services |
| Address | No 136P, Lakshmi sai nivas, pragati nagar, Hyderabad, Telengana, India Pincode: 500090 E-mail: jkarthi48@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | The present study portrays the impact of coastal inundation by sea level rise due to climate change based on the AR6 scenario database. The coastal land subsidence and upliftment also play a crucial role in the rising sea levels by worsening as the land subsidence increases the inundation levels. There are various reasons for urban land subsidence, such as heavy infrastructure load, excess groundwater extraction, soil consolidation, and land use changes. The findings of long-term global sea level rise (absolute sea level) only account for the overall sea level rise without considering the local processes. A coastal city undergoing even a minor subsidence over time will drastically change the trend and speed up the inundation. The prediction and preparedness, considering the rise in global sea level, may not be enough if the coastal city experiences subsidence. Small Baseline Subset (SBAS) method of Interferometric Synthetic Aperture Radar (InSAR) gives land deformation details using microwave images. Using long-term time series analysis, we can detect slow-moving land parts. Tide gauge measurements give relative sea-level rise, including land movement. Satellite altimetry provides absolute sea-level rise. By applying the sea-level equation, we separate vertical land motion from tide gauge records. GNSS data further quantifies land movement. These results assess coastal subsidence contributing to regional sea-level change, enabling precise absolute sea-level change rates. Integrating sea-level rise and vertical land motion is vital for projecting future coastal hazards, aiding policymakers in developing innovative adaptation strategies for vulnerable coastal cities. |
| Are you part of IIOE-2 endorsed project | no |
| Keywords | Vertical Land Motion, Relative Sea Level Change, Coastal Subsidence, coastal vulnerabbility |
| For Awards | no |