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We present the Submillimeter Array (SMA) 157-pointing mosaic in 0.86 mm dustcontinuum emission with 5$".1\times4"$.2 angular resolution, and the NRAO GreenBank 100m Telescope (GBT) observations of the CS/C$^{34}$S/$^{13}$CS 1-0 andSiO 1-0 emission with $\le20"$$\times18"$ angular resolution. The dustcontinuum image marginally resolves at least several tens of 10-10$^{2}$$M_{\odot}$ dense clumps in the 5$'$ field including the circumnuclear disk(CND) and the exterior gas streamers. There is very good agreement between thehigh resolution dust continuum map of the CND and all previous molecular lineobservations. As the dust emission is the most reliable optically thin tracerof the mass, free from most chemical and excitation effects, we demonstrate thereality of the abundant localized structures within the CND, and theirconnection to external gas structures. From the spectral line data, thevelocity dispersions of the dense clumps and their parent molecular clouds are$\sim$10-20 times higher than their virial velocity dispersions. This supportsthe idea that the CND and its immediate environment may not be stationary orstable structures. Some of the dense gas clumps are associated with 22 GHzwater masers and 36.2 GHz and 44.1 GHz CH$_{3}$OH masers. However, we do notfind clumps which are bound by the gravity of the enclosed molecular gas.Hence, the CH$_{3}$OH or H$_{2}$O maser emission may be due to strong(proto)stellar feedback, which may be dispersing some of the gas clumps.

ISM Processing in the Inner 20 pc in Galactic center