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491151.515397_388554 Apr 2026

Every few minutes, a packet of data—including that long numeric string—pings off a satellite, telling a laboratory in a distant city that the ocean is calm.

The "story" of this place is one of solitude and surveillance.

In the world of map data, these numbers typically point to a very specific patch of earth. If we interpret them as coordinates ( 491151.515397_388554

A pressure sensor on the sea floor that feels the "weight" of the entire ocean above it, listening for the tectonic shiver of an earthquake.

A yellow buoy bobbing on the surface, battered by storms that no human eyes see. Every few minutes, a packet of data—including that

), they lead to a remote, deep-water location in the , far from any coastline. The Story of the Silent Sentinel

To a passing freighter, it is just another swell in an endless march of waves. But to the Deep-Ocean Assessment and Reporting of Tsunamis (DART) buoy tethered nearby, it is the center of the world. Beneath this coordinate lies a silent landscape of abyssal plains, miles below the surface, where light hasn't touched the silt in millions of years. If we interpret them as coordinates ( A

In the vast, blue desert of the North Pacific, there is a spot marked only by the ghost of a digital footprint: .

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Contact

Department of Informatics and Networked Systems

School of Computing and Information

University of Pittsburgh

135 N. Bellefield Avenue

622 IS Building

Pittsburgh, PA  15260

​​

Tel: (412) 383-4641

E-mail: ​[email protected]

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