Hari Vishnu

Excited to announce our latest paper: we’ve shown that the sounds produced by melting glaciers are quantitatively linked to their melt activity, conclusively, for the first time! 🔊🧊 doi.org/10.1017/jog.20… #Glaciology #Acoustics (1/4)

I continue to advocate for acoustics as a versatile tool—for marine mammals, reefs, fishes and much more. With Distributed Acoustic Sensing extending its reach, I believe acoustics can become truly mainstream for these applications. (4/4)

Regions with high activity levels were eventually determined to be biodiversity hotspots. For technical details: doi.org/10.1016/j.mare… . This work is ongoing, we’ve learned a great deal, and there’s more to uncover as we mine our datasets and refine our interpretations. (3/4)

Seeing research make real-world impact in products/action/policy is very rewarding. So it was heartening to see my work on acoustic marine-mammal biodiversity characterization in Singapore used to inform policy—converting Sisters, Lazarus–Kusu islands to Marine Parks. (1/4)

Hari Vishnu, Yuen Min Too, Mandar Chitre, Danwei Huang, Teong Beng Koay, Sudhanshi S. Jain, "Passive Acoustic Monitoring of Noisy Coral Reefs," arxiv.org/abs/2511.05349

You can also read the pdf shared here: arl.nus.edu.sg/wp-content/upl… (3/3)

This region is poorly studied due to calving hazards. In 2023, GLAMOR collected #thermohaline+#acoustics+video data right next to the #glacier wall—likely amongst the 1st close direct surveys of this zone. These studies enhance our understanding of ablation processes (2/3)

Over the last few years we explored #robotics to monitor remote glacial termini and complement our acoustic studies. Introducing Glacial Ablation Monitoring Robot (GLAMOR), a surface vehicle to operate in the hazardous region near #glacier termini doi.org/10.1109/OCEANS… (1/3)

PhD opportunity

This is a big step toward using acoustic monitoring for large-scale, long-term tracking of glacier melt—helping us understand ice losses around the world. 🌎🔉 (4/4) #ClimateScience #Cryosphere #Arctic #Polar #PassiveAcoustics

To tackle this, we created a physics-based model to explain how the sound varies across the glacial bay! The result? We can estimate how much sound melting glaciers produce, & link this to what drives melt (water temperature) & its outcome (how fast the glaciers retreat). (3/4)

Excited to announce our latest paper: we’ve shown that the sounds produced by melting glaciers are quantitatively linked to their melt activity, conclusively, for the first time! 🔊🧊 doi.org/10.1017/jog.20… #Glaciology #Acoustics (1/4)

The competition is bigger than ever! 🌍 With participants from 14 different countries, it's an exciting global showdown. We can't wait to meet all the passionate and innovative student minds! Countdown to #sauvc2025 #marinerobotics

@oscar_snoopy Excellent news, Oskar! 👏

My proposal "Studying glacier/ocean interactions using a natural laboratory of Hornsund fjord, Svalbard" has been funded by the Polish National Science Centre. 3,5 mln PLN to create new research team and study critical processes acting at glacier/ocean boundaries. More news soon.

Deadline for Marine Robotics Workshop is quickly approaching! Sec school students eager to explore autonomous robots&ocean conservation, gather your teams& register now. Don't miss this opportunity to learn from SG's top underwater robotics experts and build your very own robots!

@BayQuest_sf Thank you!

@harivn Fascinating!

Thrilled to announce my recent published work on polar monitoring using comp vision at IEEE OCEANS, a culmination of fieldwork in Svalbard last year. It focuses on estimation of floating ice distribution in glacial bays using aerial imagery by fine-tuning+robustifying a SAM (1/2)

Our findings can help understand ice dynamics, complement our ongoing study on acoustic monitoring at glaciers, & may also pave the way for real-time analysis of glacial changes. Paper available here, or can be downloaded from my webpage: ieeexplore.ieee.org/document/10754… (2/2)

Secondary School Students!Join the Marine Robotics Workshop—a hands-on event focused on ocean sustainability and robotics, endorsed by the UN ‘the Ocean Decade’!Organized by SP Polytechnic & NUS, along with SAUVC. Registrations are open forms.gle/EsMkJmSswveCCg @UNOceanDecade