From major storms to daily tides, the sandy shores of New Hampshire are constantly moving — gaining sand in some places and losing it in others. But how do scientists and volunteers actually track those changes over time?  

In this episode of Time and Tide, we dig into the world of beach profiling — a simple yet powerful method that measures the contour of the shoreline month after month to reveal patterns of erosion and accretion along our coast. By taking regular measurements of beach elevation and slope, the NH Volunteer Beach Profile Monitoring Program contributes to long-term coastal monitoring efforts that inform local decision-making, coastal resilience planning, and scientific research.  

Learn how citizen scientists — also referred to as participatory scientists — use two measuring poles to collect this important data, while researchers interpret the meaning of this for your favorite New Hampshire beaches.  

What better way to explain beach profiling, than to take you for a walk along the beach in Seabrook, NH, where a small group of researchers and volunteer citizen scientists meet on a windy winter day to measure the beach.

Guest Speakers:  

Alyson Eberhardt, Ph.D., Coastal Ecosystems Extension Specialist, New Hampshire Sea Grant 

Larry Ward, Ph.D., Research Associate Professor, UNH Center for Coastal and Ocean Mapping 

Wells Costello, Citizen Science Program Manager, New Hampshire Sea Grant 

Rachel Morrison, Research Assistant, UNH Center for Coastal and Ocean Mapping 

Hosted by: Brian Yurasits, Science Communication Specialist, New Hampshire Sea Grant 

Produced by: Brian Yurasits 

Further reading: 

Beach Resilience Data 

Citizen Science in Shifting Sands (StoryMap) 

Storm Report Series 

New Hampshire Sea Grant works to enhance our relationship with the coastal environment to sustain healthy and resilient ecosystems, economies, and communities through integrated research, extension, education, and communications efforts. Based at the University of New Hampshire, New Hampshire Sea Grant is one of 34 programs in the National Oceanic and Atmospheric Administration’s National Sea Grant College Program, a state-federal partnership serving America’s coasts. Learn more by visiting: seagrant.unh.edu 

University of New Hampshire is an equal opportunity employer, learn more: https://extension.unh.edu/civil-rights-statement