Gravity Studio — Satellite Gravity & Bathymetry Exploration Platform

Created: August 2026 Live Production App: gravity-studio.yufajjiru.work Powered by: Terraversi Source: Private repository

A modern fullstack geophysical exploration platform for extracting, processing, and analyzing global seafloor bathymetry and satellite altimetry-derived gravity anomaly fields from the Scripps Institution of Oceanography, UC San Diego (Smith & Sandwell, 1997; Sandwell et al., 2014).

Key Capabilities

Universal Grid Extractor & JIT Streamer: Bounding-box selection on global satellite & nautical bathymetry imagery with seamless 0-meridian wrap, snapped to canonical $0.5^\circ \times 0.5^\circ$ tiles for $100\%$ global edge cache reuse, with self-healing resumable stream recovery from IndexedDB.
Complete Bouguer Reduction & Parasnis Regression: Continental & marine Bullard-A reduction with Hayford-Bowie and Hammer terrain corrections, plus interactive Nettleton / Parasnis least-squares density fitting ( $R^2$ , empirical crustal density $\rho_c$ , density contrast $\Delta\rho$ ).
Tri-Map Synchronized Viewports: Real-time GPU-accelerated rasterization of Topography/Bathymetry (GEBCO), Free-Air Gravity Anomaly (FAA), and Complete Bouguer / Residual Anomaly (CBA).
2D Potential Field Calculus Profiler: First Horizontal Derivative (FHD), Second Vertical Derivative (SVD) via Laplace's equation, and Tilt Derivative (TDR) AGC phase filtering for basement depth estimation.
Elkins (1951) Fault Classification Engine: Automated real-time structural analysis classifying normal, thrust/reverse, and strike-slip/transtensional steps from SVD dipole ratios.
Industry-Standard Deliverables: Export to Oasis Montaj/Geosoft .XYZ, Surfer .GRD, Geosoft .GXF, GeoTIFF, GeoJSON, CSV, and high-DPI composite publication plates.

Technical Stack & Architecture

Layer	Technology
Frontend Framework	React 18, TypeScript, Vite, PWA (vite-plugin-pwa)
GPU & Graphics	WebGL 2.0, Custom GLSL Fragment Shaders
Mapping & Spatial	Leaflet, Leaflet-Draw, Google Earth Satellite Layer
Backend & Edge	Cloudflare Workers, Hono, Cloudflare Cache API
Geophysics Algorithms	Bullard-A Reduction, Hayford-Bowie Terrain Correction, Parasnis Regression, FHD, SVD, TDR, Elkins (1951)
Persistence & Caching	IndexedDB (L2), Cloudflare Edge Cache (L3), Workers Rate Limiter
Upstream Data Source	SIO / UCSD Sandwell & Smith Satellite Altimetry Model
Hosting & Deployment	Cloudflare Workers (Custom Domain: `gravity-studio.yufajjiru.work`)

Live Application: https://gravity-studio.yufajjiru.work