Images

Commo shack at Deadhorse geomagnetic observatory.

Total field pier at Deadhorse geomagnetic observatory.

Display computer in Commo shack at Deadhorse geomagnetic observatory.

Fluxgate pier at Deadhorse geomagnetic observatory.

Absolutes electronics at Deadhorse geomagnetic observatory.

Data acquisition system at Deadhorse geomagnetic observatory.

The USGS has been monitoring the Kennebunk River near Kennebunk, Maine since June 2008 and the peak discharge for the period of record occurred in February 2010.

Fresno geomagnetic observatory.

Scientist Christoph Kern adjusts the alignment of optics on the active long-path differential optical absorption spectroscopy (LP-DOAS) instrument. LP-DOAS sends a beam of ultraviolet or visible light to a reflector located tens to hundreds of meters away.

The USGS operates a real-time lake elevation monitoring gage on Spirit Lake to ensure water level does not exceed a safe limit. In 1985, the U.S.

House engulfed by debris flows generated in response to a rainstorm on February 6, 2010. This house was west of Briar Wood Canyon in southern California. The small, but steep and rugged drainage basin above this home was burned the previous summer by the Station Fire, the largest fire in the history of Los Angeles County.

House damaged by debris flows generated in Mullally Canyon in response to a rainstorm on February 6, 2010. The drainage basin above this home was burned the previous summer by the Station Fire, the largest fire in the history of Los Angeles County.

Vehicles crushed beneath the second story balcony of the Hotel D'Haiti located in Port-au-Prince. This entire hotel with more than 50 rooms was destroyed as a result of the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010.

Massive rock slides were caused by strong ground shaking during the main shock of the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010 and several of the stronger aftershocks. This mountain road leads north to the city of Dufort, located near the larger city of Leogane.

Collapsed multi-story residence in Port-au-Prince following the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010. The weight of heavy concrete floors and roofs was often too great for the modest strength in support columns, as evidenced here.

A real view of Port-au-Prince, Haiti, looking southeast with the port in the foreground and main city residences and other buildings showing as white in the center. Many of the neighborhoods with the heaviest destruction from the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010 are included in this view.

USGS seismoogists Dr. Walter Mooney completes the installation of a sensitive temporary seismograph to record earthquake aftershocks. The seismograph is installed in a small storage room in a small village. The cable leads to an outdoor antenna that provides accurate time via a GPS signal.

Collapsed multi-story building occupied by "Centre D'Edudes La Concorde" in Port-au-Prince, a result of the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010. An examination of the adjacent buildings indicates that this structure was either two or three stories tall.

Not all places of business or residence collapsed or suffered serious damage following the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010. Here, an auto parts store in Port-au-Prince is open for business on January 28, 2010, sixteen days after the earthquake. This street still contains trash and litter due to lack of public services.

USGS seismologist Dr. Walter Mooney (with white hat in left hand) together with residents of a village were a seismographic station was installed, following the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010.

This young girl stands in front of a massive crack in the road on highway Nationale 2 near Petit Gaove, Haiti. The highway collapse was caused by lateral spreading of the underlying soil during the magnitude-7 earthquake that struck Haiti on Jan. 12, 2010.