Fig. 1 presents fragments of records obtained from digital stations Erimo (∆ 2º), Matsushiro (∆ 5.2º), Yuzhno-Sakhalinsk (∆ 7º), Vladivostok (∆ 9º) Kuldur (∆ 12.3º). Fig. 2 presents fragments of records obtained from digital stations Tiksi (∆ 32.6º), Arti (∆ 55.2º), Kirov (∆ 58.8º), Obninsk (∆ 66.5º), Kislovodsk (∆ 70º).

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GS RAS registered 10 aftershocks with М>=4.8 within four hours after the main shock.

According to TASS a tsunami threat has been issued for the coasts of the northeastern prefectures of Iwate, Aomori, Miyagi, and the south of Hokkaido. More than 171,000 people in Japan's Hokkaido, Aomori, Iwate, Miyagi, and Fukushima prefectures have been advised to evacuate due to the threat of a tsunami. National Meteorological Administration reported that waves with up to 70 cm high hit the coast of Iwate Prefecture.
According to Siberian Branch of GS RAS the earthquake was felt in the following populated areas of Russia: Yuzhno-Kurilsk, Goryachiy Plyazh, Golovino, Lagunnoye, Mendeleyevo, Malokurilskoye with strength 3 points.
According to National Tsunami Warning Center, a tsunami threat was declared. Maximum tsunami wave height of 0.16 m was registered in the city of Ofunato on the island of Honshu, Japan.
Figure 1 was obtained from USGS NEIC, it presents USGS Community Internet Intensity Map made by 84 responses.

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Click here to view detailed macroseismic data (DyfitWeb service)

Focal mechanism solution of the origin was calculated at the GS RAS with signs of initial arrivals of P waves at 82 stations, including 72 stations which registered compression waves (plus signs), and 10 stations which registered tensile waves (minus signs). The stations are located in the interval of epicentral distances 2-102º and in azimuth sector Az=0-358º. Focal mechanism solution in stereographic projection on the lower hemisphere and elements of the mechanism are presented in the table. The table also contains focal mechanism solutions obtained at the USGS NEIC with WW-phase Moment Tensor (Mww) technique and in Lamont-Dohert Earth Observatory of Columbia University, USA (LDEO GCMT) with СМТ (Centroid moment tensor) technique. Solutions from different centers are close. The earthquake was caused by predominantly east-oriented compression stresses (AZ=99-100º) according to GS RAS and USGS NEIC and east-southeast (AZ=107º) according to LDEO GCMT. One nodal plane NP1 strikes south-southwest (STK=191-193º) according to GS RAS and USGS NEIC and south (AZ=186º) according to LDEO GCMT, another plane NP2 strikes north (STK=8-9º) according to GS RAS and USGS NEIC and north-northeast (AZ=20º) according to LDEO GCMT. NP1 plane lies more horizontally (DP=12-19º) if compared with NP2 (DP=71-78º). The type of motion along NP1 – thrust, along NP2 – reverse fault. The seismic moment of the earthquake was obtained in GS RAS from the spectrum of P waves registered at the station "Obninsk" (∆ 66.5º), it makes Mo=2.036*10**20 N*m, Mw=7.5. The seismic moment according to USGS NEIC makes Mo=1.549*10**20 N*m, Mww=7.4. According to LDEO GCMT it makes Mo=2.01*10**20 N*m, Mw=7.5.