Fig. 27

Cyclones in the Gulf of Mexico. a Location map showing position of Tropical Storm Ida (red filled circle) that came ashore on November 10, 2009; b Satellite image showing swirly cyclonic plume occupying the entire shelf area in the northern Gulf of Mexico. Small white arrows = River mouths. NASA images courtesy Jeff Schmaltz, MODIS Rapid Response Team at NASA GSFC. https://earthobservatory.nasa.gov/IOTD/view.php?id=41237&eocn=image&eoci=related_image. Image acquired on November 10, 2009, just a few hours after the storm hit Alabama and Florida. Unlike riverine hyperpycnal plumes, transport of gravel, sand, and mud to deep-water environments by cyclone-related flows is possible. Additional labels by G. Shanmugam