The intrinsic compressional and shear wave’s velocities of rocks decrease with increasing temperature. An important parameter that quantifies the temperature effect on rocks’ wave velocities is the temperature coefficient (\(\partial V/\partial T\)), which is the gradient of the linear relationship between the wave velocity and temperature. This study investigated properties affecting the temperature coefficient of selected lithology in Ogun State Southwestern Nigeria. The samples were heated and the compressional velocities were measured at a constant pressure of 0.01 GPa and 50 °C intervals from 50 to 300 °C. The result showed that both elastic modulus and density varied directly with the absolute compressional temperature coefficient, \(\partial {V}_{P}/\partial T\) while porosity had an inverse variation. The elastic modulus, density, and porosity exhibited a notable effect on the temperature coefficient with their respective correlation coefficient as 0.98495, 0.97594 and − 0.93787. Clay content, which also exhibited an inverse variation with the temperature coefficient had a correlation coefficient of − 0.44668. For both the same and different rock types, elastic modulus is the most important property that controls the temperature coefficient.

岩石的固有纵波和横波速度随温度升高而降低。量化温度对岩石波速影响的一个重要参数是温度系数（\(\partial V/\partial T\)），它是波速与温度之间线性关系的梯度。本研究调查了影响尼日利亚西南部奥贡州选定岩性温度系数的特性。加热样品并在 0.01 GPa 的恒定压力和 50 °C 的间隔下测量压缩速度，从 50 到 300 °C。结果表明，弹性模量和密度均随绝对压缩温度系数而直接变化，\(\partial {V}_{P}/\partial T\)而孔隙率则有相反的变化。弹性模量、密度和孔隙率对温度系数有显着影响，其相关系数分别为 0.98495、0.97594 和 - 0.93787。粘土含量也表现出与温度系数的反向变化，其相关系数为 - 0.44668。对于相同和不同的岩石类型，弹性模量是控制温度系数的最重要的属性。