We present the results of an investigation of the large structure of the diffuse interstellar medium in the 2nd Galactic Quadrant (90{deg}<=l<=180{deg}). 145 loops were identified on IRAS based on far-infrared maps. Our catalogue lists their basic physical properties. The distribution clearly suggests that there is an efficient process that can generate loop-like features at high galactic latitudes. Distances are provided for 30 loops. We also give an observational estimate on the volume filling factor of the hot gas in the Local Arm, 4.6%<=f_2nd_<6.4%.

Cone search capability for table J/A+A/418/131/tablea (Parameters of the far infrared loops found in the 2nd Galactic Quadrant.)

Cone search capability for table J/A+A/418/131/tablec (Objects found to be (apparently) associated with our loops (see Sect. 3.1 for details).)